James Allen Bertelsen (February 26, 1950 – May 7, 2021) was an American professional football player who was a running back for five seasons in the National Football League (NFL) with the Los Angeles Rams.
As a sophomore at the University of Texas at Austin in 1969, he helped lead the Longhorns to a national championship in the wishbone option offense, alongside James Street, Steve Worster, and Ted Koy.
Bertelsen was selected in the second round of the 1972 NFL draft by the Los Angeles Rams with the 30th overall pick.
After his NFL career, Bertelsen returned to the Austin area.
This biographical article relating to an American football running back born in the 1950s is a stub.