Places

• Boomers! Parks - a theme park / family entertainment center chain owned by Palace Entertainment.
• Boomer, North Carolina

Animals

• An adult male kangaroo
• An adult male dog
• Mountain Beaver

People

• Chris Berman, an ESPN football analyst, nicknamed "Boomer"
• Boomer Esiason, a former National Football League quarterback
• Boomer (porn star)
• David Wells, a Major League Baseball pitcher (nicknamed "Boomer")
• Boomer (Morning X), radio DJ in Georgia

Fictional creations

• Owen Mercer, the current Captain Boomerang in the DC Comics universe
• Boomer (experiment 288), an experiment from Lilo & Stitch: The Series
• One of the two Targetmaster partners to Autobot chemist Quickmix in Transformers: see Quickmix (Transformers)
• Tabitha Smith, a Marvel Comics comic book superhero, formerly called Boomer
• The blond member of the Rowdyruff Boys, a trio of villains in The Powerpuff Girls
• The dog in the TV series Here's Boomer
• Boomer (Battlestar Galactica)
• Boomer (anime term), a fictional synthetic life form developed by Katsuhito Stingray in the anime series Bubblegum Crisis

Otherwise

• A baby boomer, someone who was born during the period of increased birth rates when economic prosperity arose in many countries following World War II
• A ballistic missile submarine in American naval slang
• The Australian national basketball team, officially nicknamed "Boomers"
• Boomer, one of the two mascots owned by the Indiana Pacers
• A nickname and organization of advocates for the opening of the Oklahoma Territory for settlement; see Sooners, settlers who didn't wait for permission to settle.
• A nickname for transient railroad workers who did not stay with any one railroad, see Hobo.
• Port Vale F.C's mascot, Boomer (K9) the dog
• A nickname for a boom operator in aerial refueling
• Hallucinogenic Mushrooms
• A measurement unit representing the equivalent of 5 inches