"(You're) Having My Baby" is a song written and recorded by Canadian popular music singer Paul Anka. Recorded as a duet with female vocalist Odia Coates, the song became Anka's first No. 1 hit on the Billboard Hot 100 in 15 years. Despite its commercial success, the song regularly appears in "worst song" lists and was voted the #1 "Worst Song of All Time" in a poll conducted by CNN.com.

Anka — whose last chart-topping hit was 1959's "Lonely Boy" — had written the song for his wife and their four daughters while appearing at Lake Tahoe. The song, meant to celebrate the joy and anticipation of being a father-to-be, quickly gained notoriety with the National Organization for Women, who gave Anka the "Keep Her in Her Place" award.

Originally, the song was to be a solo effort by Anka. But the unknown Coates, whom Anka had met while on tour, was at the studio during the recording session. Upon suggestion by United Artists recording executive Bob Skaff, the song became a duet.

Released in late June 1974, the mellow-sounding "(You're) Having My Baby" quickly climbed the chart and became Anka's third No. 1 song. A follow-up single — "One Man Woman/One Woman Man" — reached the Top 10 in early 1975.

At about the same time "(You're) Having My Baby" was climbing the Hot 100, a female country vocalist named Sunday Sharpe recorded a cover version called "I'm Having Your Baby." With lyrics altered to the female perspective but otherwise identical to Anka's version, "I'm Having Your Baby" peaked at No. 11 on the BillboardHot Country Singles chart in October 1974.

"(You're) Having My Baby" was covered on the first season of Glee.