Jenna Maroney (born Yustrepa Gronkowitz; February 24, 1969) is a fictional character on the American television series 30 Rock, played by Jane Krakowski.

Her ethnic origin is that of an Ashkenazi Jew (with an extra Y chromosome), as revealed through a DNA sample, which Jack mistakenly thought belonged to Kaylie Hooper.

Jenna's father, Werner (or possibly Travis) Maroney was a burger server in suburban Santa Barbara, before leaving her mother, Verna (Jan Hooks), for a "curly-haired surfer" named Roberta — which hurt her.

As a young girl, Jenna competed in child pageants and was on Weight Watchers at age six (though the math was too much and she eventually turned to cigarettes).

Jenna was trained in stage acting and game show pointing at the Royal Tampa Academy of Dramatic Tricks, where she studied theatre superstition and majored in prom queens and murdered runaways (mentioned in "Black Light Attack").

Jenna also claimed to have had a relationship with Mickey Rourke, and his over-the-top attempts at killing her (by catapulting her into the Hollywood sign, throwing her onto the field during the Superbowl, with a double-edged sword, etc.)

Later performances included The Jenna Chronicles: A One-Wormy Show in 1996 and Con Air: The Musical in 1997, where she appears to have played Rachel Ticotin character.

She also appeared in an episode of Law & Order as a "lady rapist" and from a poster in her dressing room, had also starred in a production of the Broadway musical Evita.

Jenna's star billing is reduced drastically when Jack Donaghy is hired as a new network vice president and brings in Tracy Jordan, a popular but unpredictable actor.

When she is not working on TGS, Jenna stars in a series of low-budget films, including her first starring role, The Rural Juror, written by John Grisham's brother Kevin; Take My Hand, a romantic comedy that went through so many re-writes that it became a torture porn film, Jackie Jormp-Jomp a biopic based on the life of Janis Joplin, in which Joplin's name and music could not be used for legal reasons; Trivial Pursuit: The Movie, a movie based on the board game, in which Jenna portrayed Arts & Leisure; and Nightstalkers, a werewolf film to be shot in Iceland that had production shut down when the producers realized that the movie had to be shot at night and Iceland only had one minute of darkness per day.

In season seven, Jenna has a hit single, "Balls", which despite extensive airplay, she is outraged to discover earned her very little money due to music piracy.

After the cancellation of TGS, Jenna decides to become a dramatic actress, starting with a guest spot on Law & Order: Special Victims Unit.

However, after learning that she would only play a corpse, Jenna gives up that dream and takes her career to Los Angeles, but immediately leaves after seeing how many beautiful younger women live there.

It is revealed that a year later, Jenna will force her way on stage to claim the Tony Award for Best Actress in a Musical, despite her name not being called and Alice Ripley being the real winner.