Steve Landesberg (November 23, 1936 – December 20, 2010) was an American actor and comedian known for his role as the erudite, unflappable police detective Arthur P. Dietrich on the ABC sitcom Barney Miller, for which he was nominated for three Emmy Awards.

A dramatic western story had Landesberg as Gregory Peck speaking with Belle Starr, who spoke with an incongruous accent: "Vell!

Landesberg was a member of the cast of the 1974 CBS situation comedy Paul Sand in Friends and Lovers, and co-starred in the TV pilot Black Bart, a spin-off of Blazing Saddles.

He made guest appearances on The Rockford Files, Law & Order, Saturday Night Live, The Golden Girls, Ghost Whisperer, That '70s Show and Everybody Hates Chris.

He attempted a comeback to television playing a public defender in Seattle in an unsold sitcom pilot, The Best Defense, later aired on June 19, 1995, on ABC.

"[1] Landesberg commented on the issue in a 1979 Washington Post profile for which he refused to give his age:[5] Let's just say I started late.