Athletic director Terry Tumey announced that Tedford returns after coaching the Bulldogs from 2017-19. Tedford had a 26-14 record at his alma mater before stepping down for health reasons.
Tedford took over a 1-11 team following the 2016 season and led the Bulldogs to double-digit wins his first two seasons, winning the division in both those seasons and the Mountain West Conference championship in 2018.
Tedford played quarterback at Fresno State in 1981-82 under Jim Sweeney and coached at Fresno State under Sweeney from 1987-88 and 1992-96, and under coach Pat Hill in 1997.
Tedford has a 108-71 career head coaching record, having also spent 11 seasons at California.
Tedford will take over after the Bulldogs play in the New Mexico Bowl against UTEP on Dec. 18 under interim coach Lee Marks.