Mouser may refer to:
A working cat used for hunting rodents A ratter, a dog used to catch mice and rats Chief Mouser to the Cabinet Office, the official resident cat of the Prime Minister of the United Kingdom Mouser (video game), a 1981 video game Mouser Electronics, an online distributor of electronic components A fictional type of rat catching robots from the Teenage Mutant Ninja Turtles series A boss in the video game Super Mario Bros. 2 and recurring villain for cartoon segments of The Super Mario Bros. Super Show! A homemade grenade used by the fictional character Powder in the television series Arcane
People Grant Mouser (disambiguation), list of people with the name Mary Mouser (born 1996), American actress Michelle Mouser (born 1973), American beauty queen
Places United States Mouser, Oklahoma
Other Munich Mouser
See also Fafhrd and the Gray Mouser Mauser