Jason Mantzoukas (/mænˈzuːkəs/; born December 18, 1972) is an American actor, comedian, screenwriter and podcaster. He is best known for his recurring role as Rafi in the FX comedy series The League, and as one of the three co-hosts of the podcast How Did This Get Made? alongside Paul Scheer and June Diane Raphael.

After beginning his career as an improv comedian, he has played several comedic roles in film and television. He appeared in the films The Dictator, The Long Dumb Road, Sleeping with Other People, They Came Together, Conception, and John Wick: Chapter 3 – Parabellum. He has had recurring roles on three TV series created by Michael Schur: Parks and Recreation (as Dennis Feinstein), Brooklyn Nine-Nine (as Adrian Pimento), and The Good Place (as Derek Hofstetler). He voices the characters Jay Bilzerian in the Netflix animated series Big Mouth, Alex Dorpenberger in the HBO Max animated series Close Enough, Rex Splode in the Amazon Prime animated series Invincible, and Jankom Pog in the Paramount+ animated series Star Trek: Prodigy.

Mantzoukas was born in Lynn, Massachusetts and raised in Nahant, Massachusetts, and is the oldest child of Cynthia (née Mourousas) and William Mantzoukas, second-generation Greek-Americans.^[5][6] He has one younger sister, Melissa.^[7] He has described himself as "100 percent Greek."^[8][9]

Mantzoukas began taking drum lessons at age 10 and studied under Steve Barrett for over 8 years.^[10] In interviews, he has cited Stewart Copeland, Stephen Perkins from Jane's Addiction, and Jimmy Chamberlin from The Smashing Pumpkins as his biggest influences as a young musician.^[11] He participated in jazz and marching bands in high school, as well as playing in a cover band called Slygoul.^[12] He continued with jazz drumming in college and also played for a bebop group.^[13]

Mantzoukas attended Swampscott High School, graduating in 1991.^[14] While attending, he was named captain of Swampscott's boys' soccer and track teams and was also president of the marching band.^[15] He then attended Middlebury College in Middlebury, Vermont, where he majored in religion.^[16] He attempted to defend a "terribly written" honors thesis on religious iconography (which he admits to starting a week prior to his defense date) but was not given credit to graduate with honors.^[17]

After graduating college in 1995, Mantzoukas was granted a Watson Fellowship and traveled throughout North Africa and the Middle East studying religious and transcendental music for nearly two years.^[8][18] He has admitted to having a "horrible [grant proposal] but was charming in the room; so [he earned the grant]."^[17] At the time he left for Morocco for the Watson Fellowship, he had already had six auditions and callbacks for the Blue Man Group, but he ultimately decided to travel before the audition process was complete.^[19][20] He lived in Morocco for about 7½ months while studying and recording Gnawa music.^[21] While abroad, he also traveled to Egypt, Israel, Turkey, Jordan, and Syria.^[17] During his time abroad, he was arrested numerous times, once in Morocco for having an expired tourist visa and again in Turkey to prevent him from traveling through an active war zone.^[17]

Mantzoukas was born with an egg allergy and experiences anaphylaxis if ingested.^[45] He has cited this allergy as the cause of his hypochondriac tendencies.^[46]

He was previously in a relationship with actress Connie Britton.^[47][48]

In addition to hosting How Did This Get Made?, Mantzoukas also has been a guest on a number of podcasts.