"Can't Take My Eyes Off You" is a 1967 single credited to Frankie Valli. The song was among Valli's biggest hits, earning a gold record and reaching No. 2 on the Billboard Hot 100 for a week, stuck behind "Windy" by The Association. It was co written by Bob Gaudio, a bandmate of Valli's in The Four Seasons. It was Valli's biggest solo hit until he hit #1 in 1974 with "My Eyes Adored You".

"Can't Take My Eyes Off You" has had hundreds of cover versions, many of which have been on the charts in different countries. The song is a staple of television and film soundtracks, even being featured as part of the plot of some films, such as when the lead characters sing or arrange their own version of the song. The Valli version was also used by NASA as a wake-up song for a mission of the Space Shuttle, on the anniversary of astronaut Christopher Ferguson.

The song was written by Bob Crewe and Bob Gaudio. Arrangement was done by Artie Schroeck and Gaudio. The original recording was made at A&R Recording Studios at 799 7th Avenue, with Bob Crewe producing and Phil Ramone as the engineer.

The song has been covered by some 200 artists over the years, in many countries, under both versions of the title. A few notable examples of cover versions that appeared on the charts:

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