"Baby Baby" is a pop song by American recording artist Amy Grant, issued as the first single from her album Heart in Motion. The song was written by Keith Thomas and Grant. It was released on January 18, 1991 through A&M Records and topped the Billboard Hot 100 chart for two consecutive weeks in April 1991, becoming the first in a string of hits from Heart in Motion.

The music was written by Keith Thomas. Grant always knew the song would be a smash hit, and was begging Thomas to sing the song. He agreed with the only condition that the song's title must be "Baby Baby". Grant had a hard time writing the lyrics, because her early attempts to write a romantic-sounding lyric to a song with such title came off sounding like "some overgrown football jock with no vocabulary trying desperately to be romantic". But one day, after having seen her six-week-old daughter Millie, she said to herself: "Oh, baby baby". As a result, the lyrics were written in about ten minutes in her kitchen. In the Heart in Motion booklet there are words: This song is dedicated to Millie, whose six-week-old face was my inspiration. Millie would also appear on stage during Grant's performance at the 34th Grammy Awards.

The song is almost four minutes in length and is composed in the key of F-sharp major, set in the time signature of 4/4 common time with a moderate tempo. In the middle of the song, the key is changed to G-sharp major, then for a short amount of time goes back to F-sharp major and finally ends with Ab major. Grant's vocal range spans from F2♯ to D4♯. The song consists of three different verses that are interrupted by a bridge Stop for a minute, baby I'm so glad you're mine. Lyrically, the song praises that special someone and expresses love that started since the day her heart was "put in motion". The chorus is the source of the album's title: And ever since the day you put my heart in motion, baby I realized that there's just no gettin' over you. It fades out with the lyrics:
Don't stop givin' love
Don't stop, no
(Baby I'm so glad)
Glad that you're mine
Baby I'm glad

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