"I Didn't Know My Own Strength" is a song performed by American singer Whitney Houston, taken from her seventh studio album I Look to You (2009).

[5][6][7][8] The song's release was originally confirmed by Diane Warren who told Vibe Magazine she had penned the single especially for Houston, and it would be released as the first single.

Title song "I Look to You" was released as the U.S. lead single whilst "Million Dollar Bill" (the second U.S. release) became the international lead single.

Houston performed the song on The Oprah Winfrey Show on September 15, 2009[10][11] and live on the 2009 American Music Awards broadcast.

Due to the popularity of the song, a remix-EP was released alongside remixes for the two official singles on November 6, 2009.