For a single game:
22 (Tied for NFL Record), David Carr (November 19, 2006 vs Buffalo)
Over two games:
Donovan McNabb holds the record of 24 in 2004. Second is Peyton Manning with 23.
Brett Favre 6,300 completions
As of Super Bowl XLII, that would be Joe Montana of the San Francisco 49ers with 13 consecutive completions in Super Bowl XXIV.
Dee
Brett Favre, who holds virtually every career record for a quarterback, had 6,300 lifetime pass completions.
Ken Anderson
Brett Farve
As of the start of the 2008 season, that would be Brett Favre with 5,377.
Orlovsky
Brett favre
The most passes completed in a season by an NFL quarterback is 468. The record was set by Drew Brees for the New Orleans Saints in 2011.
Brett Favre with 285. 1992 - Present
Ben Roethlisberger holds the Steeler record for most completions in a season with 337 in 2009.