Lauren Marie Patten (born September 22, 1992) is an American actress, singer, and writer best known for originating the role of Jo in the Broadway musical Jagged Little Pill, as well as playing Officer Rachel Witten in the crime series Blue Bloods.

Patten participated in many productions at the Rubicon, and she was nominated for a 2008 Los Angeles Stage Alliance Ovation Award for Best Featured Actress in a Play for her portrayal of Elma in Bus Stop.

[9] In 2015, Patten moved to New York City to appear in the original Broadway cast of Fun Home as the cover for Medium Alison and Joan.

[14] Later in 2017, Patten was the lead in the New York Musical Festival's production of The Goree All-Girl String Band where she played Reable Childs.

In the fall of 2019, Patten reprised her role of Jo in Jagged Little Pill on Broadway at the Broadhurst Theatre,[19] where she has received critical praise, especially for her performance of "You Oughta Know".

Some of her major credits include the recurring roles of Officer Rachel Witten on the show Blue Bloods and Polly Dean on Season 3 of The Good Fight.