Don't Let Him Know

"Don't Let Him Know" is a song by Canadian rock band Prism, written by Jim Vallance and Bryan Adams. It was the first single from the band's fifth studio album, Small Change (1981). "Don't Let Him Know" was Prism's biggest US hit, peaking at No. 1 on the Mainstream Rock chart and No. 39 on the Billboard Hot 100. As a single it reached No. 49 on the Canadian Singles chart.

The song and footage of the band performing were later used in a commercial for Craig car stereos.

Personnel
Prism
 * Henry Small – lead vocals
 * Lindsay Mitchell – guitar
 * Rocket Norton – drums
 * Al Harlow – bass guitar

Re-recorded version
In 2009, Prism re-recorded "Don't Let Him Know" with Al Harlow on lead vocals.