"Stranger in My House" is a song recorded by Canadian singer Tamia. It was written by Shae Jones and frequent collaborator Shep Crawford and produced by the latter. Initially helmed for fellow R&B singer Toni Braxton, it was left unused and later recorded by Tamia for her second studio album, A Nu Day (2000). Inspired by the surprise ending of the supernatural thriller film The Sixth Sense (1999), the strings-led, dramatic R&B ballad is about a woman who is confused with her partner's recent change in behavior and goes into denial about it.

Tamia Marilyn Washington Hill is a Canadian singer and songwriter. Born and raised in Windsor, Ontario, Tamia performed in various singing and dancing competitions as a child. In 1994, after signing a development deal with Warner Bros. Records, she was asked by veteran producer Quincy Jones to appear on his album Q's Jook Joint (1995), earning her Grammy Award nominations for their collaboration on "You Put a Move on My Heart" and "Slow Jams". Her self-titled debut album was released in 1998 and followed by a series of successful albums with Elektra Records, including A Nu Day (2000) and More (2004). Several songs from these albums became hit singles on the pop and R&B record charts, including "So Into You", "Stranger in My House", and "Imagination", as well as her collaborations "Into You", "Missing You", and "Spend My Life with You".