There have been 21managers in the history of theSeattle MarinersMajor League Baseball (MLB) franchise. The Mariners franchise was formed in1977 as a member of the American League.^[1]Darrell Johnson was hired as the first Mariners manager, serving for just over three seasons before being replaced during the1980 season. In terms of tenure,Lou Piniella has managed more games and seasons than any other coach in their franchise history. He managed the Mariners to four playoff berths (1995,1997,2000 and2001), led the team to theAmerican League Championship Series in 1995, 2000 and 2001, and won theManager of the Year award in 1995 and 2001.^[2] Until 2022, Piniella was the only manager in Mariners history to lead a team into the playoffs, with one of those times after a 116-win season, tying the record for most wins in a season.^[3] None of the previous managers had made it to the playoffs before. Piniella, however, managed the team in 34 playoff games, winning 15 and losing 19.^[4][5][6][7]Dick Williams is the only Mariners manager to have been inducted into theBaseball Hall of Fame.

There have been nine interim managers in Mariners history. In 1980, manager Darrell Johnson was replaced byMaury Wills. In1981, managerRene Lachemann replaced Maury Wills.^[8] In1983, Lachemann was relieved byDel Crandall. Crandall did not last a full season either, asChuck Cottier took over his job in1984. By1986, Cottier was replaced with a temporary manager,Marty Martinez. After one game, the Mariners found Dick Williams to take over the role of manager.^[9] He in turn was replaced byJim Snyder in1988. In2007, managerMike Hargrove resigned in a surprise move amidst a winning streak, citing increased difficulty in putting forth the same effort he demanded of his players. Hargrove was replaced with bench coachJohn McLaren midseason.^[10] A year later, in2008, the Mariners front office decided McLaren was not performing by their standards, and was fired and replaced by interim managerJim Riggleman.^[11] Newgeneral managerJack Zduriencik hiredDon Wakamatsu as skipper for the2009 season; after finishing the season with a .525winning percentage, the team's poor performance coupled with off-field issues led to Wakamatsu's firing on August 9, 2010.^[12]Daren Brown, who was the manager of the Mariners' Triple-A affiliate, theTacoma Rainiers, managed the Mariners for the remainder of the 2010 season.Eric Wedge was hired to manage the team for the 2011 to 2013 seasons.Lloyd McClendon was hired as the Mariners' manager on November 7, 2013, till the end of the 2015 season.^[13]Scott Servais was hired on October 23, 2015, and lead the team to their first playoff appearance since 2001 in 2022 while also becoming the second longest tenured manager in team history from 2016 to 2024.^[14][15] The Mariners then fired Servais after a midseason collapse on August 22, 2024, and immediately hiredDan Wilson as their next manager on the same day.^[16]

Statistics are accurate through the end of the2023 Major League Baseball Season.

#[a]	Image	Manager	Seasons	G	W	L	Win%	PGM	PW	PL	Awards	Ref
1		Darrell Johnson	1977–1980	588	226	362	.384	–	–	–		[17]
2		Maury Wills	1980–1981	82	26	56	.317	–	–	–		[18]
3		Rene Lachemann	1981–1983	320	140	180	.438	–	–	–		[19]
4		Del Crandall	1983–1984	224	93	131	.415	–	–	–		[20]
5		Chuck Cottier	1984–1986	217	98	119	.452	–	–	–		[21]
6		Marty Martínez	1986	1	0	1	.000	–	–	–		[22]
7		Dick Williams*	1986–1988	351	159	192	.453	–	–	–		[23]
8		Jim Snyder	1988	105	45	60	.429	–	–	–		[24]
9		Jim Lefebvre	1989–1991	486	233	253	.479	–	–	–		[25]
10		Bill Plummer	1992	162	64	98	.395	–	–	–		[26]
11		Lou Piniella	1993–2002	1,551	840	711	.542	34	15	19	Manager of the Year Award (1995, 2001)	[27]
12		Bob Melvin	2003–2004	324	156	168	.481	–	–	–		[28]
13		Mike Hargrove	2005–2007	402	192	210	.478	–	–	–		[29]
14		John McLaren	2007–2008	156	68	88	.436	–	–	–		[30]
15		Jim Riggleman	2008	90	36	54	.400	–	–	–		[31]
16		Don Wakamatsu	2009–2010	274	127	147	.464	–	–	–		[32]
17		Daren Brown	2010	50	19	31	.380	–	–	–		[33]
18		Eric Wedge	2011–2013	486	213	273	.440	–	–	–		[34]
19		Lloyd McClendon	2014–2015	324	163	161	.503	–	–	–
20		Scott Servais	2016–2024	1,292	668	624	.517	5	2	3
21		Dan Wilson	2024–present	204	115	89	.564	12	6	6

• ^A A running total of the number of managers of the Mariners. Thus any manager who has had two or more terms as manager is only counted once.

• Seattle Mariners managers
• Lists of Major League Baseball managers
• Seattle Mariners lists

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