Roxann Dawson was born in Los Angeles, California, to Richard and Rosalie Caballero. She graduated from the University of California, Berkeley (Theater Arts major). She soon landed her first role as Diana Morales in the Broadway production of "A Chorus Line". During her acting career, she performed in numerous productions including plays at Circle Reoertory Theatre, where she was a member and Julie Taymor's "The Tempest", George Abbott's "Tropicana", "Six Characters in Search of An Author" , "Accelerando", "Rose Tattoo", "Daughters", among others.

She has also been on many television series and movies - including popular series such as Star Trek: Voyager (1995), Baywatch (1989), Matlock (1986), Jake and the Fatman (1987), The Untouchables (1993), Nightingales (1989), Any Day Now (1998), Seven Days (1998), Coupling (2003), Another World (1964), The Fortunate Pilgrim (1988), The Round Table (1992), among others, but her television experience includes roles in a number of television movies such as Broken Angel (1988), Guilty by Suspicion (1991), Dirty Work (1992), Mortal Sins (1992), Pointman (1994), Greyhounds (1994) and Foto Novelas: Seeing Through Walls (1997).

Dawson works as a writer as well as director -- She made her directorial debut on Star Trek: Voyager (1995) and continued directing on series like Any Day Now (1998), Enterprise (2001) and Charmed (1998). She does also practice writing -- a trilogy called "Tenebrea" was co-written by her and Daniel Graham! She resides in Los Angeles with her husband Eric Dawson and their children.