The single season record is 73 set by Barry Bonds in 2001.
The Dodgers single season home run record is held by Shawn Green who hit 49 in 2001.
He holds the world record for the most home runs in a single season.
Barry Bonds with 73 in one season
Barry Bond hit 73 home runs in 2001 to set the single season home run record.
Barry Bonds holds the single season home run record with 73 set in 2001, and holds the record for career home runs with 762, set in 2007.
Barry Bonds set the single season home run record with 73 home runs in 2001.
Ryan Howard with 58 in 2006.
Carlos Beltran Holds the record for most home runs hit in a single season by a New York Met with 41, in 2006; matching the effort of Todd Hundley in 1996. For a CAREER in a Mets uniform, Darryl Strawberry holds the record with (I think) 251 homers.
The record for team home runs in a season is held by the 1997 Seattle Mariners who hit 264.
Barry Bonds is the current holder, with 73 home runs in 2001.
Felipe López with 23 in 2005.
Sadaharu Oh, who played in Japan, has 868 home runs, the most home runs in a career in professional baseball history. He also holds the single season record in Japan with 55. Barry Bonds holds the major league baseball career record with 762 home runs. He also holds the single season record in MLB with 73.
As of the 2009 season, Barry Bonds still holds the single seaon home run record with 73.
In Major League Baseball, it is Barry Bonds with 73.
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Javy Lopez of the Atlanta Braves with 42 in 2003.
As of the 2008 season, that is Ralph Kiner who hit 54 HRs in 1949.
Barry Bonds holds the record for most home runs hit in a single season with 73, set in 2001.