- Started career as a musician; played clarinet and saxophone in small bands and later in the orchestras of Charlie Spivak, Shep Fields and Charlie Thornhill.
- Turned to acting while serving in the Coast Guard during WWII; first stage performance was in the military musical Tars and Spars.
- His signature double-talk routines were inspired by listening to customers speak foreign languages in his father's restaurant as a child.
- His hit variety show, Your Show of Shows, helped launch the careers of comedy writers Mel Brooks, Neil and Danny Simon, and Carl Reiner in the 1950s.
- Inducted into the TV Academy Hall of Fame in 1985.
- Published two autobiographies: Where Have I Been? (1982) and Caesar's Hours: My Life in Comedy, With Love and Laughter (2003).
- Married to wife, Florence, for 67 years; she died in March 2010.
- 1954, Emmy — Best Male Star of a Regular Series: Nominee
- 1995, Emmy — Outstanding Guest Actor in a Comedy Series: Nominee
- 1957, Emmy — Best Continuing Performance by a Comedian in a Series: Winner
- 1956, Emmy — Best Comedian: Nominee
- 1952, Emmy — Best Comedian or Comedienne: Nominee
- 1997, Emmy — Outstanding Guest Actor in a Comedy Series: Nominee
- 1958, Emmy — Best Continuing Performance (Male) in a Series by a Comedian, Singer, Host, Dancer, M.C., Announcer, Narrator, Panelist, or any : Nominee
- 1953, Emmy — Best Comedian: Nominee
- 1951, Emmy — Most Outstanding Personality: Winner
- 1963, Tony — Actor (Musical): Nominee
- 1952, Emmy — Best Actor: Winner
- 1951, Emmy — Best Actor: Nominee
- Karen Caesar — Daughter
- Richard Caesar — Son
- Florence Caesar — Wife (deceased)
- Ida Raffel Caesar — Mother
- Max Caesar — Father
- Michele Caesar — Daughter
- Dave Caesar — Brother
- Attended the Juilliard School, New York, New York, United States
- Birth Name: Isaac Sidney Caesar
- Birth Place: Yonkers, New York, United States
- Birthday: September 8, 1922, Virgo
- Died: February 12, 2014
- Profession: Actor, Comedian, Musician