"Child of Winter (Christmas Song)" is a Christmas song written by Brian Wilson and Stephen Kalinich (and incorporating in its structure the opening verse from "Here Comes Santa Claus" by Gene Autry and Oakley Haldeman). It was recorded by the American rock band the Beach Boys and was released as a single in 1974 backed with "Susie Cincinnati". It was the only Beach Boys single between the albums Holland and 15 Big Ones.
An early version with Dennis Wilson on lead vocals and Carl Wilson singing the bridge is reported to exist.
When released in other countries, the single featured "Good Vibrations" as a B-side.
"Child of Winter (Christmas Song)" was included on the band's 1998 compilation Ultimate Christmas.