Jonathan Paul Katz is an American actor and comedian best known for his starring role in the animated sitcom Dr. Katz, Professional Therapist as Dr. Katz. He also is known for voicing Erik Robbins in the UPN/Adult Swim series Home Movies. He produces a podcast titled Hey, We're Back and can be heard on Explosion Bus.

Dr. Katz, Professional Therapist is an American adult animated sitcom created by Jonathan Katz and Tom Snyder for Comedy Central. It originally ran from May 28, 1995, to February 13, 2002. The series starred the voice talents of Jonathan Katz, H. Jon Benjamin, and Laura Silverman. The show was produced by Popular Arts Entertainment, HBO Downtown Productions, and Tom Snyder Productions. The series won a Peabody Award in 1998.