Trivia

Has a tattoo on his left forearm that reads "Nancy Rules". It is a tribute to his grandmother.

Officiated the wedding between childhood friend Adam Levine and Behati Prinsloo.

His top five favorite films are Rushmore (1998), The Big Lebowski (1998), Boogie Nights (1997), Back to the Future (1985) and Goodfellas (1990). (2010)

As of 2022, he has appeared in 4 movies that were nominated for the Best Picture Oscar: Moneyball (2011), Django Unchained (2012), The Wolf of Wall Street (2013), and Don't Look Up (2021).

Was roommates with Justin Long after they met on the TV show Campus Ladies (2006).

The first sequels of his career, 22 Jump Street (2014) and How to Train Your Dragon 2 (2014) opened on the same day: June 13, 2014.

Is very sensitive about his weight, and thoroughly dislikes being asked about it in interviews. He lost almost 40 pounds in 2011, mainly by eating sushi.

Is good friends with Channing Tatum, with whom he worked on 21 Jump Street (2012), This Is the End (2013) and 22 Jump Street (2014). He also befriended Leonardo DiCaprio while working together on The Wolf of Wall Street (2013).

Won the role of "Seth" over Bo Barrett in Superbad (2007).

Is friends with Dustin Hoffman's children - Rebecca Hoffman and Jake Hoffman, which is how he discovered the role in I Heart Huckabees (2004).

In Superbad (2007), Hill's character says, "This plan's been [bleep]ed since Jump Street," referencing the TV show 21 Jump Street (1987). Five years later, Hill would star in the big-screen version of 21 Jump Street (2012).

Studied drama at New School University.

Son of Richard Feldstein and Sharon Feldstein. Brother of Jordan Feldstein and Beanie Feldstein. Former brother-in-law of Francesca Eastwood. Of Russian Jewish descent, Jonah Hill's great-uncle was actor, director, and producer Alan Rafkin, whose sister, Claire, was Jonah's paternal grandmother.

Was ranked #21 on Entertainment Weekly's '30 Under 30' the actors list. (2008)

He is the first male born in 1980 or after to have received more than one Academy Award nomination for acting (for Moneyball (2011) and The Wolf of Wall Street (2013)). The next two are Eddie Redmayne (for The Theory of Everything (2014), which he won, and The Danish Girl (2015)) and Ryan Gosling (for Half Nelson (2006), La La Land (2016), and Barbie (2023)).

Friends with Emma Stone.

Announced his engagement to Gianna Santos on September 2, 2019. The two split as of October 2020.

Enjoys the films of Woody Allen.