the record for kickoff returns for touchdowns in a game is 2, held by several players
The single game record is 4 KICKOFFS returned for touchdowns. It was done by Roger Maris of Fargo H.S. against Devils Lake in 1950.
In the 2011 NFL regular season, there were 1259 touchdowns scored, 745 passing, 400 rushing, 20 punt returns, 9 kickoff returns, 80 by the defense, and 5 classified as 'other'. There being 256 regular season games played in 2011, this averages out to 4.92 touchdowns per game.
Dan Marino holds the record for most passing touchdowns in a championship game
With the combination of punt returns and kick off returns the number of players is close to 99 with 2 touchdowns in a single game.
Utah at Colorado, 11/23/2012, 4th quarter had back to back 100 yard kickoff returns
Five touchdowns vs. Denver in Superbowl XXIV.
Howard Griffith, Illinois, 1990 with 8 touchdowns Howard Griffith, Illinois, 1990 with 8 touchdowns
Career Record: Emmitt Smith of the Dallas Cowboys. He has five rushing touchdowns scored over three games. Single Game Record: Terrell Davis of the Denver Broncos scored three rushing touchdowns in a single game.