Stephanie Janette Block (born September 19, 1972) is an American actress and singer, best known for her work on the Broadway stage.

Her mother, Rosemarie (née Garritano), worked for the local school district, and her father, Steven Block, was a welfare fraud investigator.

[2] Of German and Italian descent,[3] Stephanie grew up in Brea, where she attended St. Angela Merici Parish School (then 1-8, now pre-K through 8).

[5] Block made her Broadway debut in 2003, playing the role of Liza Minnelli opposite Hugh Jackman's Peter Allen in the show.

The show received mixed reviews but proved to be a hit with audiences, playing on Broadway for close to a year.

Block was praised by critics, such as Ben Brantley from The New York Times, for giving a "truly felt, realistic, performance".

[7] Plagued by insufficient ticket sales and harsh reviews, the show opened in April and barely played for two months at the Hilton Theatre, closing in June.

[8] Later that year Block reprised the role of Elphaba in Wicked on Broadway beginning October 9, 2007, where she replaced Julia Murney.

[9] Block starred alongside Allison Janney, Megan Hilty, and Marc Kudisch in the musical adaptation of the 1980 film 9 to 5.

Block starred as Judy Bernly, the frazzled divorcée, the role played by Jane Fonda in the film.

[14] Block made her off-Broadway debut as Gloria Mitchell in the play By the Way, Meet Vera Stark by Pulitzer Prize winner Lynn Nottage alongside Karen Olivo and David Garrison.

[18] Block starred as Reno Sweeney in the Broadway revival of Anything Goes, first playing the role for three weeks in November 2011 while Sutton Foster was away filming a pilot episode.

[23] Block performed the lead role in Roundabout Theatre Company's production of The Mystery of Edwin Drood, which ran from November 13, 2012, to March 10, 2013.

[24][25] From November 14 to December 15, 2013, Block appeared in the Off-Broadway production of Little Miss Sunshine at Second Stage Theatre as Sheryl Hoover.

[39] She then starred alongside Brian d'Arcy James, who returned to the show after Arcelus's limited engagement ended the following month.

[42] Block starred as Norma Desmond opposite Derek Klena as Joe Gillis in the Kennedy Center production of Sunset Boulevard from February 1–8, 2023.

Arcelus starred alongside Block in the first national tour of Wicked as the Fiyero replacement from January to March 2006 and again on Broadway from October to December 2007.