Trivia

Great-grandfather Tim Mara founded the New York Giants. Great-grandfather Art Rooney founded the Pittsburgh Steelers.

Kate and her younger sister Patricia have their mother's maiden name, Rooney, as their middle name, but her sister takes it as her first name and is known professionally as Rooney Mara.

Kate and her sister Rooney Mara both appeared in Best Picture Oscar nominated films in 2011. Rooney was in The Social Network (2010), Kate in 127 Hours (2010).

Her younger sister Rooney Mara is also an actress.

Mara has stated she comes from a "huge" family. Her father is one of 11 children. She has 22 aunts and uncles and 40 cousins.

A skilled jazz/tap/ballet dancer.

Great-uncle Dan Rooney was the US Ambassador to Ireland from 2009 to 2012.

Uncle John Mara is CEO of the New York Giants since 2005.

Is contractually permitted to attend any Super Bowl involving the Steelers or Giants due to her arc on 24 (2001) causing her to miss Super Bowl XL (2006).

(July 15, 2017) Married her boyfriend of 2 years Jamie Bell following a 6-month-long engagement.

Was in consideration for the role of Selina Kyle/Catwoman in The Dark Knight Rises (2012), but Anne Hathaway was cast instead. She also lost to Amy Adams for Lois Lane in Man of Steel (2013).

Gave birth to her daughter at 36 weeks gestation via an emergency cesarean section at Cedars-Sinai instead of having an at-home birth like she had wanted. Mara revealed that she had to be induced at 36 weeks along because, after experiencing intense itching, she tested positive for Cholestasis: a liver disease that can happen in the late stages of pregnancy and potentially harm an unborn baby.

Her favorite films are Coal Miner's Daughter (1980), The Sound of Music (1965), Lady Jane (1986), The English Patient (1996) and Friday Night Lights (2004).

Granddaughter of Wellington Mara and Timothy Rooney.

Mother, with husband Jamie Bell, of a daughter (b. May 2019).

Daughter of Kathleen McNulty (née Rooney) and Timothy Christopher Mara, a scout for the New York Giants.

Close friends with Elliot Page. The two co-produced My Days of Mercy (2017) as a vehicle in which they could star together.

She was in a relationship with actor Max Minghella for several years, starting in 2010.

Stepmother to Jamie Bell's son from his marriage to Evan Rachel Wood.

Great-granddaughter of Art Rooney and Kathleen McNulty.

Her paternal grandfather was of Irish descent and her paternal grandmother was of half German, as well as of French-Canadian and Irish, ancestry. Her mother is of Irish and Italian descent.

Suffered a miscarriage before giving birth to her daughter in May 2019.

Ranked #43 on the Maxim magazine Hot 100 of 2007 list.

Second cousin of YouTube and Instagram artist, Heather Rooney.

She has appeared in one film that has been selected for the National Film Registry by the Library of Congress as being "culturally, historically or aesthetically significant": Brokeback Mountain (2005).

She has appeared in three films that have been nominated for the Best Picture Oscar: Brokeback Mountain (2005), 127 Hours (2010) and The Martian (2015).

Wore a wig in Fantastic Four(2015).

She's a vegan.

Cousin of John Mara Jr..