"My Best Friend" is a song written by Aimee Mayo and Bill Luther, and performed by American country music singer Tim McGraw that reached the top of the Billboard Hot Country Singles & Tracks chart. It was released in October 1999 as the third single from his CD A Place in the Sun.

The song describes Tim showing emotions toward a woman lover whom he calls "[his] best friend".

Giving it a B+, Ben Foster of Country Universe wrote that "Sometimes it just takes the right vocalist to find the layers of emotion woven into a lyric that could scan as pedestrian in the hands of another performer. In this instance, Tim McGraw indeed proves to be the right vocalist." He also says that McGraw's "heartfelt performance is bolstered by a pleasant lilting melody and a laid-back arrangement featuring generous amounts of fiddle and steel guitar."

"My Best Friend" re-entered the U.S. Billboard Hot Country Singles & Tracks as an official single at number 75 for the week of October 9, 1999.

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