All Time Records	Single Season Records	MLB Milesontes
Career BA Leaders	Highest BA in a Season	No Hitters and Perfect Games
Career Hits Leaders	Most Hits in a Season	300 Wins Club
Career HR Leaders	Most HRs in a Season	3000 Strikeouts Club
Career RBI Leaders	Most RBIs in a Season	500 Home Run Club
Career Runs Leaders	Most Runs in a Season	3000 Hits Club
Career SB Leaders	Most SBs in a Season	Triple Crown Winners
Career Wins Leaders	Most Saves in a Season
Career Saves Leaders	Most K's in a Season
Career K Leaders	Lowest ERA in a Season
Career ERA Leaders

It will take a monster season to be Hack Wilson's most RBI's in a season. Wilson's 191 Runs Batted In is simply amazing baseball record. Manny Ramirez's 165 RBIs in 1999 is the highest total that has happened recently. Lou Gehrig had over 150 RBIs in a season 7 times, Babe Ruth made the List 6 times.

There are 46 MLB players who have totalled over 150 Runs Batted In, in a single season. There are only 3 active players on this list; Alex Rodriguez, Manny Ramirez, and Miguel Tejada

Most Runs Batted In in a Single MLB Season
Rank	Player	Team	RBIs	Year
1	Hack Wilson	Chicago Cubs	191	1930
2	Lou Gehrig	New York Yankees	184	1931
3	Hank Greenberg	Detroit Tigers	183	1937
T4	Jimmie Foxx	Boston Red Sox	175	1938
T4	Lou Gehrig	New York Yankees	175	1927
6	Lou Gehrig	New York Yankees	174	1930
7	Babe Ruth	New York Yankees	171	1921
T8	Hank Greenberg	Detroit Tigers	170	1935
T8	Chuck Klein	Philadelphia Phillies	170	1930
10	Jimmie Foxx	Philadelphia Athletics	169	1932
11	Joe DiMaggio	New York Yankees	167	1937
12	Sam Thompson	Detroit Wolverines	166	1887
T13	Lou Gehrig	New York Yankees	165	1934
T13	Manny Ramirez	Cleveland Indians	165	1999
T13	Al Simmons	Philadelphia Athletics	165	1930
T13	Sam Thompson	Philadelphia Phillies	165	1895
17	Babe Ruth	New York Yankees	164	1927
T18	Jimmie Foxx	Philadelphia Athletics	163	1933
T18	Babe Ruth	New York Yankees	163	1931
20	Hal Trosky	Cleveland Indians	162	1936
21	Sammy Sosa	Chicago Cubs	160	2001
T22	Lou Gehrig	New York Yankees	159	1937
T22	Vern Stephens	Boston Red Sox	159	1949
T22	Ted Williams	Boston Red Sox	159	1949
T22	Hack Wilson	Chicago Cubs	159	1929
26	Sammy Sosa	Chicago Cubs	158	1998
T27	Juan Gonzalez	Texas Rangers	157	1998
T27	Al Simmons	Philadelphia Athletics	157	1929
T29	Jimmie Foxx	Philadelphia Athletics	156	1930
T29	Alex Rodriguez	New York Yankees	156	2007
T31	Joe DiMaggio	New York Yankees	155	1948
T31	Ken Williams	St. Louis Browns	155	1922
T33	Joe Medwick	St. Louis Cardinals	154	1937
T33	Babe Ruth	New York Yankees	154	1929
T35	Tommy Davis	Los Angeles Dodgers	153	1962
T35	Babe Ruth	New York Yankees	153	1930
T37	Albert Belle	Chicago White Sox	152	1998
T37	Lou Gehrig	New York Yankees	152	1936
T37	Rogers Hornsby	St. Louis Cardinals	152	1922
T40	Lou Gehrig	New York Yankees	151	1932
T40	Mel Ott	New York Giants	151	1929
T40	Al Simmons	Philadelphia Athletics	151	1932
T43	Andres Galarraga	Colorado Rockies	150	1996
T43	Hank Greenberg	Detroit Tigers	150	1940
T43	Babe Ruth	New York Yankees	150	1926
T43	Miguel Tejada	Baltimore Orioles	150	2004

Updated: Mar. 25th 2011

Sources:
baseball-reference.com
baseball-almanac.com
wikipedia.org
thebaseballcube.com