In 1955, Jim Finks threw 26 interceptions, that was the most by a Steelers quarterback in one season.
Brett Farve in 2005 with 29 interceptions
Well some backup quarterbacks only had a few snaps and threw 0, but the starting quarterback who threw the least was Aaron Rodgers with 6.
Through the 2009 season, that is Brett Favre with 317 career interceptions.
Through the 2008 season in the NFL, that is Brett Favre with 310 career interceptions.
In 1962, George Blanda, the Quarterback for the Houston Oilers, threw for 42 interceptions in a single season.
Through the 2008 season, that is 31 by Sid Luckman in 1947.
The quarterback that has the most interceptions is Brett Favre, he has 22 interceptions
Fewest losses ever? Or fewest losses in a season?
Jarrett Lee, LSU. 7 in one season (and counting)
141.The most INTs he threw in a season was 18 (1989 and 1990) and fewest was 5 (1998).