"All I Need" is a song by American musician-singer-songwriter Dan Hartman, released as the third and final single from his 1981 album It Hurts to Be in Love.

Released in America only, the single followed Hartman's previous singles from the same album; "It Hurts to Be in Love and Heaven in Your Arms, which were both minor hits on the Billboard Hot 100 (the former also a minor hit on the Dance Music/Club Play Singles Chart). "All I See" did not reach the Top 100 and instead peaked at #110 on the Bubbling Under the Hot 100 Chart. It made its debut on September 26, 1981, and stayed on the chart for a total of three weeks. The song also peaked at #41 on the Billboard Hot Adult Contemporary Tracks Chart.

The song, like the entire It Hurts to Be in Love album, was recorded at The Schoolhouse, mixed at Power Station and mastered at Sterling Sound. The Schoolhouse was Hartman's own home studio in Connecticut.

The single was released via 7" vinyl by Blue Sky in America only, where it would be Hartman's last single on the label. It was distributed and manufactured by CBS Records. Two editions of the single were issued. The main release featured the b-side "Forever in a Moment", which was an album track on the It Hurts to Be in Love album, and was also written and produced by Hartman. The other edition was a promotional 7" single which featured "All I Need" on both sides of the vinyl. Both editions of the single did not feature a picture sleeve but a generic Blue Sky Records sleeve instead.

"All I Need" was also the b-side to the Dutch version of the "It Hurts to Be in Love" single. Later in 1981, April Music issued a compilation of Hartman's music, simply titled Dan Hartman, although often referred to as April Music. The album featured various previous material and included four tracks from It Hurts to Be in Love which included "All I Need". The song has not appeared on any other compilations.

No music video was created for the single, and limited promotion was given overall. The only single from the It Hurts to Be in Love album to have a video was "Heaven in Your Arms".

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