• Lige Fannin - U.S. Deputy Marshal in the Western District at Fort Smith, Arkansas.

• Jasper  Farmer- U.S. Deputy Marshal in the Western District at Fort Smith, Arkansas. 

• William R. Farmer- U.S. Deputy Marshal in the Western District at Fort Smith, Arkansas. 

• Edward J. Farr (1867-1899) - Cattleman and Huerfano County, Colorado Sheriff, he was killed in the line of duty by the Ketchum Gang in northern New Mexico.

• Jefferson "Jeff" Beauregard Farr (1862-1920) - Huerfano County, Colorado Sheriff for nearly 20 years.

• John Gist Farr (1847-18??) - A Choctaw Indian, originally from South Carolina, Farr served as  U.S. Deputy Marshal for at least eight years in the Chocktaw Nation of Indian Territory after relocating there in 1875. He was first commissioned in March, 1889 and lived in Antler, Oklahoma.

• James G. Farr - U.S. Deputy Marshal working out of the Western Court at Fort Smith, Arkansas in the 1880s.

• Sam Farris (18??-1894) - Canadian County, Oklahoma Deputy Sheriff killed in the line of duty in May, 1894.

• Frank B. Farwell - U.S. Deputy Marshal commissioned at Anadarko, Oklahoma Territory in July, 1894 and served until December of 1896 first serving under Marshals Evett Nix.

• Charles Faudree, worked with Deputy Marshals Charles Kilgore and Bill Colbert in the Atoka area. 

• H. N. Faulkinbury - U.S. Deputy Marshal commissioned on September 16, 1890 in the Western District at Fort Smith, Arkansas serving under Marshals Jacob Yoes and George J. Crump. 

• F. Faulkner - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• William Faulkner - U.S. Deputy Marshal commissioned out of the federal court in Van Buren, Arkansas serving under Marshal William A. Britton. In 1868, William arrested Amos McCurtain, a murderer and the last man to be hung at Van Buren on June 24, 1870

• Will S. Felts - U.S. Deputy Marshal at Guthrie, Oklahoma Territory in 1893 under Marshal Evett Nix, who was his brother-in-law.

• V. D. Fenno - U.S. Deputy Marshal commissioned in the Western District of Arkansas in 1899. 

• George S. Fenton - U.S. Deputy Marshal commissioned in Oklahoma Territory in July, 1894 serving under Marshal Evett Nix. 

• Bill Fentress  - U.S. Deputy Marshal commissioned in the Western District of Fort Smith, Arkansas.

• J. M. Ferguson - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• George Ferguson - U.S. Deputy Marshal commissioned on November 7, 1889 in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes. 

• J. W. Ferguson - U.S. Deputy Marshal commissioned on July 31, 1891 in the Western District at Fort Smith, Arkansas, serving under Marshal Jacob Yoes. 

• Waller Ferguson - U.S. Deputy Marshal commissioned on October 3, 1891 in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes. 

• William Ferguson - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas.

• R. James Fernandez - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• E. Ferner - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas, where he served as guard to the federal jail.   

• Sam Ferrell  - U.S. Deputy Marshal commissioned Central District in 1894. 

• R. Ferrier - U.S. Deputy Marshal commissioned on September 27, 1890 in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes. 

• Billy Fields - U.S. Deputy Marshal in Indian Territory.

• John F. Fields (18??-1892) - A half-blooded Cherokee Indian, Fields was commissioned as a U.S. Deputy Marshal in the Western District at Fort Smith, Arkansas. He was killed by Ned Christie on October 19, 1892.

• William Fields (18??-1887) - A full-blooded Cherokee Indian, Fields was commissioned as a U.S. Deputy Marshal in the Western District at Fort Smith, Arkansas in early 1887.

• Frank Filsom - U.S. Deputy Marshal commissioned in Oklahoma Territory in April, 1895 serving under Marshal Evett Nix.   

• Edward D. Fink - U.S. Deputy Marshal commissioned in El Reno, Oklahoma Territory in January, 1895 under Marshal Evett Nix.

• Cornelius Finley (18??-1878) - U.S. Deputy Marshal for the western district, killed by Mexican bandits on September 2, 1878, along with U.S. Deputy Marshal John Hicks Adams near Davidson's Canyon, Arizona . The suspects were chased into Mexico and apprehended but never tried or convicted in connection with either murder.

• Tom Finley (1875-??) - A Cherokee Indian, Finley was appointed as a U.S. Deputy Marshal in Indian Territory and often worked with Heck Bruner.

• William Finnley - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas, serving under Marshal Jacob Yoes. 

• John King Fisher (1854-1884) - A gunman, outlaw and lawman, Fisher gave up his outlaw ways and became the sheriff in Uvalde County, Texas in 1881. Three years later, both he and friend, Ben Thompson, were killed in an ambush in San Antonio, Texas.

• Samuel N. Fisher - U.S. Deputy Marshal commissioned on March 11, 1884 in the Western District at Fort Smith, Arkansas serving under Marshal Thomas Boles. 

• Robert Fitzhenry - U.S. Deputy Marshal commissioned on May 11, 1871 serving in the Western District of Arkansas, under Marshal Logan Roots. 

• T. H. Fitzpatrick - U.S. Deputy Marshal commissioned on May 28, 1888 in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes. 

• J. O. Flack - U.S. Deputy Marshal commissioned in 1860 serving in the Western District of Arkansas. 

• E. M. Flans - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• George W. Flatt (1853-1880)  - Flatt was Caldwell, Kansas ' first marshal in 1879, but was not well liked. When a new mayor was elected the next year he was replaced. He was killed on June 19, 1880 by members of the "new" police force.

• Edmond Fleetwood - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• Charles A. Fleming - U.S. Deputy Marshal commissioned on July 20, 1872 in the Western District at Fort Smith, Arkansas serving under Marshal Logan S. Roots. 

• William J. Fleming - U.S. Deputy Marshal commissioned on May 29, 1893 in the Western District at Fort Smith, Arkansas serving under Marshals George J. Crump and Solomon F. Stahl. 

• James Flinchum - U.S. Deputy Marshal commissioned in the District Court at Muskogee in 1894. 

• C. Mike Flinn - U.S. Deputy Marshal commissioned on June 5, 1893 in the Western District at Fort Smith, Arkansas serving under Marshal George J. Crump.

• W. B. B. Flippin - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• Jordan O. Flock - U.S. Deputy Marshal commissioned on July 21, 1869 in the District Court at Van Buren, Arkansas serving under Marshal William A. Britton

• James Flomilins - U.S. Deputy Marshal that worked in Indian Territory in 1894. 

• Simon Flood - U.S. Deputy Marshal commissioned on August 5, 1891 in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes.

• Frank Flore - U.S. Deputy Marshal commissioned in the Southern District Court of Indian Territory at Paris Texas.   

• David D. Flow - U.S. Deputy Marshal commissioned in the Southern District Court of Indian Territory at Paris, Texas in 1894.

• Camillus Sydney “Buck” Fly (18??-1901) - Best known for his photography of the Geronimo's surrender in 1886, Fly was living and working in Tombstone during the Gunfight at the O.K. Corral. He also served as the sheriff of Cochise County, Arizona for two years.

• Uriah Folgers - U.S. Deputy Marshal commissioned on January 8, 1870 in the District Court at Van Buren, Arkansas serving under Marshal William A. Britton.   

• D. J. Folsom - U.S. Deputy Marshal commissioned in the Central District in 1895. 

• W. “Tandy” Folsom (18??-1893) - U.S. Deputy Marshal working out of the Western District in Fort Smith, Arkansas.  In September, 1893 he killed a man named Captain Key Duran in self-defense. However, just a few months later, in November, 1893, as Folsom attempted to arrest a man named Dave Bohannon in the Choctaw Nation, Bohannon slipped up behind the deputy and shot and killed him.

• S. W.  Fooy - U.S. Deputy Marshal commissioned in June, 1898. 

• Frank Ford - U.S. Deputy Marshal assigned to the Atoka, Oklahoma court.  

• S. Samuel Foreman - U.S. Deputy Marshal commissioned on March 7, 1895 by Marshal George J. Crump in the Western District Court at Fort Smith, Arkansas.

• William Foreman - U.S. Deputy Marshal commissioned in Indian Territory. 

• Frederick Fornoff (1859-1935) - Albuquerque, new Mexico chief of Police, Rough Rider, U.S. Deputy Marshal in New Mexico and Captain of the New Mexico Mounted Police. 

• Joseph S. Forrest - U.S. Deputy Marshal commissioned on February 13, 1889 in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes.     

• William Fortner - U.S. Deputy Marshal who served in the Northern Judicial District in 1895. 

• Arthur M. Foss - U.S. Deputy Marshal commissioned in the Southern District in 1898, serving as office deputy. 

• Mary Frances "Mamie" Fossett - Appointed as a U.S. Deputy Marshal by C.H. Thompson of Guthrie, Oklahoma. Fossett was the daughter of Bill Fossett . and one of the few women to be appointed as a deputy during the 19th century. She came to Oklahoma during the land rush to find a homestead, was well educated, and performed the same duties as male officers, including serving writs and warrants, and making arrests.

• William “Bill” or “Will” D. Fossett (1851?-1940) - A lawman in various capacities for over 50 years, Fossett served as a U.S. Deputy Marshal and should be recognized as much as more famous lawmen, such as Heck Thomas and Bill Tilghman.

• Josiah Foster - U.S. Deputy Marshal commissioned on August 2, 1872 in the Western District at Fort Smith, Arkansas serving under Marshal Logan S. Roots. 

• Townsend N. Foster - U.S. Deputy Marshal commissioned on August 14, 1895 in the Western District at Fort Smith, Arkansas serving under Marshal George J. Crump. 

• William M. Foster - U.S. Deputy Marshal commissioned in the Southern District Court of Indian Territory at Paris, Texas, in 1894. 

• H. L. Fowler - U.S. Deputy Marshal commissioned Central District of Indian Territory in 1894. 

• Joe Fowler - U.S. Deputy Marshal commissioned Central District of Indian Territory in 1894. 

• Charles Fox - U.S. Deputy Marshal commissioned at Tecumseh, Oklahoma Territory in July, 1894 serving under Marshal Evett Nix.  He rode with lawmen Heck Thomas and John James in November, 1895 capture the Graves Gang, who were wanted for murder. In the end, they arrested four gang members who were sent to Fort Smith, Arkansas for trail.

• F. M. Foyil - U.S. Deputy Marshal commissioned on August 12, 1890 in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes

• Friar Frair - U.S. Deputy Marshal commissioned in Indian Territory in the 1880s. On January 19, 1886, he was required to serve an arrest warrant on fellow U.S. Deputy Marshal Bass Reeves, for the murder of Reeves’ cook, William Leech. However, when Reeves stood trial, he was cleared when the death was ruled as accidental. 

• G. J. B.  Frair - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas.

• J. W. Fraley - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• George Milton Frazer (1828-1908) - Arizona Ranger and Judge in Toyah, Texas.

• W. George Frazier - U.S. Deputy Marshal commissioned in the Western District of Arkansas under Judge Parker at Fort Smith, Arkansas. He became a deputy when Deputy Marshal West Harris was killed and though he spent numerous hours trying to solve the mystery, the killers were never captured.

• Carl Freeman - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• E. S. Freeman - U.S. Deputy Marshal commissioned on August 31, 1869 in the District Court at Van Buren, Arkansas serving under Marshal William A. Britton.

• Franklin H. Freeman, was commissioned on January 2, 1892, in the Western District at Fort Smith, Arkansas, serving under Marshal Jacob Yoes.     

• John L. Freeman - U.S. Deputy Marshal commissioned  in Indian Territory, while serving simultaneously with the Indian police in the Osage Nation. 

• John W. Freeman - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• William B. Freeman - U.S. Deputy Marshal commissioned on July 19, 1869 serving in the District Court at Van Buren, Arkansas under Marshal William A. Britton. 

• Robert M. French - U.S. Deputy Marshal commissioned on September 20, 1889 in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes.  

• Dave Freshour - U.S. Deputy Marshal commissioned in June 30, 1898 in Oklahoma Territory.

• W. E. Freshour - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas. 

• Henry Frey  - U.S. Deputy Marshal commissioned in the Southern District Court of Indian Territory at Paris, Texas, in 1894.

• William M. Fritts - U.S. Deputy Marshal commissioned on June 11, 1890 in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes.  

• Reuben M. Fry - U.S. Deputy Marshal commissioned on February 11, 1884 in the Western District at Fort Smith, Arkansas serving under Marshal Thomas Boles.  In July, 1888, he was riding with Deputy Marshals Trammell and Wheeler near Black Springs, Arkansas, trying to locate whiskey stills when they were ambushed by bootleggers and Trammell was killed. 

• Charles O. Frye - U.S. Deputy Marshal commissioned in the Northern Judicial District of Indian Territory in 1895.

• Andy J. Fryer - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas serving under Marshal Jacob Yoes. 

• D. N. Fullbright - U.S. Deputy Marshal commissioned on June 19, 1893 in the Western District at Fort Smith, Arkansas serving under Marshal George J. Crump. 

• Jesse L. Fuller - U.S. Deputy Marshal commissioned in the Western District at Fort Smith, Arkansas.

• A. E. Fulsom - U.S. Deputy Marshal working in Indian Territory. 

• James D. Furber - U.S. Deputy Marshal placed over the Sac and Fox District in February,  1896 serving under Marshal Patrick S.

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