Trivia

Stepbrother of Troian Bellisario (who plays his sister on NCIS (2003)), Nicholas Bellisario, Michael Bellisario, Julie B. Watson, and David Bellisario.

In a commentary recording for a fourth-season episode of NCIS (2003), Sean noted that his father had been the executive officer on board the aircraft carrier Enterprise.

Son of Vivienne Bellisario; stepson of Donald P. Bellisario.

Is a regular cast member on the series created/produced by his stepfather Donald P. Bellisario on CBS, NCIS (2003), as Special Agent Timothy McGee. (December 2004)

Older brother of Chad W. Murray, who was the victim on The Immortals (2003), and who also happens to work as post-production coordinator on NCIS (2003).

Had a five time recurring role on his stepfather Donald P. Bellisario's CBS series, JAG (1995), along with a previous one time guest role two years earlier on the same show, as a different character.

Is the longest serving cast member on NCIS (2003), surpassing David McCallum and Mark Harmon.

Sean and Mark Harmon starred in the episode "The Right Stuff" of Harts Of The West in 1993. Ten years later they were together again in NCIS.

Daughter Cay Ryan Murray (Caitlyn Melissa Murray) (b. May 3, 2007).

Son River James Murray was born on April 22, 2010, in Los Angeles.

Is one of the longest serving actors on a TV show.

One day younger than Brian Dietzen.

He listens to electronic music. Sean has cited Aphex Twin and Drexciya as two of his favorite artists.

He is a huge fan of David Lynch's work.

Still co-starring in his stepfather Donald P. Bellisario's CBS series, NCIS (2003). (January 2010)

He attended Bonita Vista Junior High (now Bonita Vista Middle) in Chula Vista, California.

As of 2025, NCIS: New Orleans (2014) is the only NCIS (2003) spinoff Murray ever appeared in. To be more specific, he appeared in Season 3 Episode 14 Pandora's Box, Part II (2017).

Part of Murray's background (born in Maryland, and having a Navy father) is incorporated into NCIS (2003).