In Major League Baseball (MLB), the 30–30 club is the group of batters who have collected thirty home runs and thirty stolen bases in a single season. Ken Williams was the first to achieve this, doing so in 1922. He remained the sole member of the club for 34 years until Willie Mays achieved consecutive 30–30 seasons in 1956 and 1957. Bobby Bonds became the club's fourth member in 1969 and became the first player in MLB history to reach the 30–30 club on three occasions and ultimately on five occasions, subsequently achieving the milestone in 1973, 1975, 1977 and 1978.

In total, 46 players have reached the 30–30 club in MLB history and fourteen have done so more than once. Of these 46 players, 31 were right-handed batters, 9 were left-handed and 6 were switch hitters, meaning they could bat from either side of the plate. Nine of these players (including five active members of the 30–30 club) have played for only one major league team. The Mets and the Braves each have 4 players to reach the milestone, Cincinnati Reds, Cleveland Indians, Colorado Rockies, and San Francisco Giants each have had three players reach the milestone. Five players – Hank Aaron, Barry Bonds, Willie Mays, Alex Rodriguez and Sammy Sosa – are also members of the 500 home run club, and Aaron, Mays and Rodriguez are also members of the 3,000 hit club. Dale Murphy, Jose Canseco, Barry Bonds, Larry Walker, Jimmy Rollins, Ryan Braun, Mookie Betts, and Ronald Acuña Jr. won the Most Valuable Player (MVP) Award in the same year as their 30–30 season, with Bonds achieving this on two occasions (1990 and 1992). Both Mays and Rollins also reached the 20–20–20 club in the same season. Four players accomplished 30–30 seasons in 1987, 1996, 1997, 2011, and 2023, the most in a single season. The feat has been accomplished by teammates twice: by Darryl Strawberry and Howard Johnson for the New York Mets in 1987, and then by Ellis Burks and Dante Bichette for the Colorado Rockies in 1996.

Due to the rarity of a player excelling in the combination of hitting home runs and stealing bases, Baseball Digest called the 30–30 club "the most celebrated feat that can be achieved by a player who has both power and speed." Six members of the 30–30 club have been elected to the National Baseball Hall of Fame, with Mays and Aaron elected in their first year of eligibility. Eligibility requires that a player has been retired for at least five seasons or deceased for at least six months, disqualifying any active players and those recently retired.

Members

Key

Year	The year the player's 30–30 season occurred
Player (X)	Name of the player (number of 30–30 seasons at that point, if more than one)
Team	The player's team for his 30–30 season
HR	Number of home runs in that year
SB	Number of stolen bases in that year
&	Denotes 40–40 season
†	Elected to the Baseball Hall of Fame
‡	Player is active

Members of the 30–30 club

Year	Player	Team	HR	SB	Ref.
1922	Ken Williams	St. Louis Browns	39	37
1956	Willie Mays	New York Giants	36	40
1957	Willie Mays (2)	New York Giants	35	38
1963	Hank Aaron	Milwaukee Braves	44	31
1969	Bobby Bonds	San Francisco Giants	32	45
1970	Tommy Harper	Milwaukee Brewers	31	38
1973	Bobby Bonds (2)	San Francisco Giants	39	43
1975	Bobby Bonds (3)	New York Yankees	32	30
1977	Bobby Bonds (4)	California Angels	37	41
1978	Bobby Bonds (5)	Chicago White Sox Texas Rangers	31	43
1983	Dale Murphy	Atlanta Braves	36	30
1987	Joe Carter	Cleveland Indians	32	31
	Eric Davis	Cincinnati Reds	37	50
	Howard Johnson	New York Mets	36	32
	Darryl Strawberry	New York Mets	39	36
1988	Jose Canseco	Oakland Athletics	42	40
1989	Howard Johnson (2)	New York Mets	36	41
1990	Barry Bonds	Pittsburgh Pirates	33	52
	Ron Gant	Atlanta Braves	32	33
1991	Ron Gant (2)	Atlanta Braves	32	34
	Howard Johnson (3)	New York Mets	38	30
1992	Barry Bonds (2)	Pittsburgh Pirates	34	39
1993	Sammy Sosa	Chicago Cubs	33	36
1995	Barry Bonds (3)	San Francisco Giants	33	31
	Sammy Sosa (2)	Chicago Cubs	36	34
1996	Dante Bichette	Colorado Rockies	31	31
	Barry Bonds (4)	San Francisco Giants	42	40
	Ellis Burks	Colorado Rockies	40	32
	Barry Larkin	Cincinnati Reds	33	36
1997	Jeff Bagwell	Houston Astros	43	31
	Barry Bonds (5)	San Francisco Giants	40	37
	Raúl Mondesí	Los Angeles Dodgers	30	32
	Larry Walker	Colorado Rockies	49	33
1998	Shawn Green	Toronto Blue Jays	35	35
	Alex Rodriguez	Seattle Mariners	42	46
1999	Jeff Bagwell (2)	Houston Astros	42	30
	Raúl Mondesí (2)	Los Angeles Dodgers	33	36
2000	Preston Wilson	Florida Marlins	31	36
2001	Bobby Abreu	Philadelphia Phillies	31	36
	José Cruz Jr.	Toronto Blue Jays	34	32
	Vladimir Guerrero	Montreal Expos	34	37
2002	Vladimir Guerrero (2)	Montreal Expos	39	40
	Alfonso Soriano	New York Yankees	39	41
2003	Alfonso Soriano (2)	New York Yankees	38	35
2004	Bobby Abreu (2)	Philadelphia Phillies	30	40
	Carlos Beltrán	Kansas City Royals Houston Astros	38	42
2005	Alfonso Soriano (3)	Texas Rangers	36	30
2006	Alfonso Soriano (4)	Washington Nationals	46	41
2007	David Wright	New York Mets	30	34
	Jimmy Rollins	Philadelphia Phillies	30	41
	Brandon Phillips	Cincinnati Reds	30	32
2008	Grady Sizemore	Cleveland Indians	33	38
	Hanley Ramírez	Florida Marlins	33	35
2009	Ian Kinsler	Texas Rangers	31	30
2011	Matt Kemp	Los Angeles Dodgers	39	40
	Ryan Braun	Milwaukee Brewers	33	33
	Jacoby Ellsbury	Boston Red Sox	32	39
	Ian Kinsler (2)	Texas Rangers	32	30
2012	Ryan Braun (2)	Milwaukee Brewers	41	30
	Mike Trout	Los Angeles Angels	30	49
2018	José Ramírez	Cleveland Indians	39	34
	Mookie Betts	Boston Red Sox	32	30
2019	Ronald Acuña Jr.	Atlanta Braves	41	37
	Christian Yelich	Milwaukee Brewers	44	30
2021	Cedric Mullins	Baltimore Orioles	30	30
2023	Ronald Acuña Jr. (2)	Atlanta Braves	41	73
	Julio Rodríguez	Seattle Mariners	32	37
	Francisco Lindor	New York Mets	31	31
	Bobby Witt Jr.	Kansas City Royals	30	49