Brewery (Number of groups) (Click a Brewer to view coasters)	Sort by code	Sort by Production Dates *RED = CLOSED*	Sort by city	Sort by count
M.T. Head Brewing (1)	WA-MTH	2009-	Graham	3
Mac and Jack's Brewery	WA-MAC	1993-	Redmond	40
Machine House Brewery	WA-MACH	2013-	Seattle	8
Maelstrom Brewing Company	WA-MAEL	c.2013-	Kirkland	1
Maritime Pacific Brewing Company	WA-MAR	1990-	Seattle	25
Matchless Brewing Co.	WA-MATC	2017-	Tumwater	7
Meheen and Collins	WA-MEH	1996-1996	Pasco	3
Menace Brewing Co.	WA-MENA	2011-	Bellingham	2
Methow Valley Brewing Co. (Twisp River Pub)	WA-METH	1998-	Twisp	7
Metier Brewing Co	WA-METI	2018-	Woodinville	5
Middleton Brewing Company	WA-MIDD	2013-	Everett	1
Mill City Brew Werks	WA-MILLC	2013-	Camas	6
Millwood Brewing Co.	WA-MILW	2018-2023	Spokane	4
Mollusk Brewing Co.	WA-MOL	2015-2019	Seattle	15
Moment Brewing	WA-MOME	2022-	Silverdale	3
Moon Ales	WA-MOON	1998-1999	Seattle	8
Moonshot Brewing Co.	WA-MOOS	2019-	Kennewick	3
Mount Olympus Brewing	WA-MOUT	2018-	Aberdeen	2
Mountain Lakes Brewing Co	WA-MOUN	2018-2024	Spokane	8
Mt. Index Brewery & Distillery	WA-MTIN	c.2014-1018		1
Mt. Tabor Brewing Co.	WA-MTT	2011-2024	Vancouver	6
Mule & Elk Brewing	WA-MULE	2016-	Cle Elum	0
Mutual Brewing Co.	WA-MUTU	1937-1943	Ellensburg	15
Washington brewers with coasters:				23
Alternate brewer referencess:
total record count:				24