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
MacTarnahans Brewing Co.	See: Portland (MacTarnahan's) Brewing Co. (OR-PORT)
MadCow Brewing Company	OR-MADC	2010-	Gresham	10
Main Street Ale House	OR-MAIN	2004-2008	Gresham	1
Mash Tun Brewpub, The	OR-MASH	2006-	Portland	2
Max's Fanno Creek Brewpub	OR-MAX	2007-2020	Tigard	14
Mazama Brewing	OR-MAZ	2012-	Corvallis	22
McKenzie Brewing	OR-MCK	1991-	Eugene	19
McMenamin's Pubs & Restaurants (7)	OR-MCM	1985-	Portland	150
Metolius Brewing Co	OR-METO	?-2009	Portland	4
Mia & Pia's Pizzeria & Brewhouse	OR-MIA	1996-	Klamath Falls	4
Migration Brewing	OR-MIG	2009-	Portland	19
Misty Mountain Brewing	OR-MIST	2017	Brookings	2
Molson & Sons	OR-MOLS	1879-1882	Portland	1
Monkless Belgian Ales	OR-MONK	2018-	Bend	2
Montavilla Brew Works	OR-MONT	2014-	Portland	4
Moonshrimp Brewing Co.	OR-MOON	2018-2023	Portland	4
Mountain View Brewing	OR-MOUN	2020-	Mt. Hood	1
Mt. Angel Brewing Co.	OR-MTA	1995-2003	Mt. Angel	6
Mt. Hood Brewing Co.	OR-MTHO	1905-1913	Portland	10
Mt. Hood Brewing Company	OR-MTH	1992-	Government Camp	36
Multnomah Brewing	OR-MUL	1994-1996	Portland	1
Mutiny Brewing Co.	OR-MUTI	2009-	Joseph	1
Mystic Roots Brewing Company	OR-MYST	2015-	Terrebonne	1
Oregon brewers with coasters:				22
Alternate brewer referencess:				1
total record count:				32