Ellison (disambiguation)
Ellison is a Human name:

People
H. Ellison, a starship captain
Ralph Ellison, an author 
Ellison Onizuka, an astronaut

Ships
Ellison, a starship

Production staff
David Ellison, a producer
Harlan Ellison, a writer and enfant terrible

Comics
Star Trek: Harlan Ellison's The City on the Edge of Forever, a five-issue comic book