Tony Romo had the most passing yards for the Cowboys in 2006, with 2,903 yards.

who has the most passing yards for cowboys in 2006 season
2006Romo2006Bledsoe2.9k1.2k
NAMESEASONTMGPYDSCMPATTPCTAVGYDS/GTDTD%INTINT%SCKSCKYRATE
Tony RomoTony Romo2006DALDAL162,90322033765.38.6181.4195.6133.92112495.1
Drew BledsoeDrew Bledsoe2006DALDAL61,1649016953.36.9194.074.184.71610769.2
StatMuse has season-level data for passing yards going back to the 1932 season.