Boomer (experiment 288), an experiment from Lilo & Stitch: The Series

An adult male dog

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 nickname for a boom operator in aerial refueling

Hallucinogenic Mushrooms

Tabitha Smith, a Marvel Comics comic book superhero, formerly called Boomer

An adult male kangaroo

Port Vale F.C's mascot, Boomer (K9) the dog

The blond member of the Rowdyruff Boys, a trio of villains in The Powerpuff Girls

David Wells, a Major League Baseball pitcher (nicknamed "Boomer")

Boomer Esiason, a former National Football League quarterback

The Australian national basketball team, officially nicknamed "Boomers"

One of the two Targetmaster partners to Autobot chemist Quickmix in Transformers: see Quickmix (Transformers)

Mountain Beaver

Owen Mercer, the current Captain Boomerang in the DC Comics universe

Chris Berman, an ESPN football analyst, nicknamed "Boomer"

A ballistic missile submarine in American naval slang

Boomer (anime term), a fictional synthetic life form developed by Katsuhito Stingray in the anime series Bubblegum Crisis

Boomer (porn star)

The dog in the TV series Here's Boomer

Boomer (Morning X), host of the X Morning Show on New Rock 103.9 (WXEG Dayton, Ohio)

Boomer (Battlestar Galactica)

Boomer, North Carolina

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.