Firstborn (disambiguation)
Firstborn may also refer to:

Firstborn, eldest child born in a family
Primogeniture, the firstborn child inherits parents' property
Firstborn (Judaism), bechor in rabbinical Judaism

Books
First Born (comics), a supervillain in DC Comics
Firstborn (Clarke and Baxter novel), 2007 novel by Arthur C. Clarke and Stephen Baxter
Firstborn (Thompson and Carter novel), 1991 novel by Paul B. Thompson and Tonya C. Cook

Film and television
Firstborn (1984 film), starring Teri Garr and Peter Weller
First Born (2007 film), starring Elisabeth Shur
1st Born, a 2019 American-Iranian comedy film
First Born (TV series), British TV show, 1988
"Firstborn" (Star Trek: The Next Generation), TV episode of Star Trek: The Next Generation
The First Born (1921 film), starring Sessue Hayakawa
The First Born (1928 film), starring Miles Mander

Music
First Born (Eyedea & Abilities album), 2001
First Born (The Plot in You album), 2011