The Mistress is a 2012 Filipino romantic melodrama film directed by Olivia Lamasan, starring John Lloyd Cruz and Bea Alonzo with Ms. Hilda Koronel and Ronaldo Valdez.

The film celebrates the 10th anniversary of John Lloyd Cruz and Bea Alonzo's partnership as a love team and also their comeback film after their hit 2010 film entitled Miss You Like Crazy.

The film was well acclaimed and received mixed to positive reviews both from critics and fans, and set a box-office record in the Philippine Cinema. It grossed over ₱260 million, becoming the highest grossing non-MMFF film of 2012 and is currently the 16th highest grossing Filipino film of all time. It also won and received six several awards (including the cast and crew) in the 31st Luna Awards and received nominations in 61st FAMAS Awards, Golden Screen Awards, and Star Awards for Movies in 2013 respectively. Due to the film's success, it was screened internationally in selected countries.

Alonzo and Cruz also had their TV series entitled A Beautiful Affair that aired in ABS-CBN last October 29, 2012, and ended on January 18, 2013, is also part of their 10th anniversary as love team and the success of The Mistress.