The Beach Boys have had four Billboard Hot 100 number-one singles.
Their first U.S. chart-topper was “I Get Around,” which reached No. 1 in 1964. It was followed by “Help Me, Rhonda” in 1965 and “Good Vibrations” in 1966. The fourth was “Kokomo,” a late-career comeback released in 1988 and associated with the film Cocktail.
The number refers specifically to songs that topped the U.S. Billboard Hot 100, not every chart on which the group reached No. 1. The Beach Boys had additional chart successes, including many Top 10 and Top 40 singles, but songs such as “California Girls,” “Fun, Fun, Fun,” and “Barbara Ann” did not reach the top position on the Hot 100.
“Kokomo” can cause confusion because Brian Wilson did not perform on the original recording, although the song was released under the Beach Boys’ name. Another source of confusion is counting international number ones or album-chart achievements, which produces different totals. For this question, the canonical Hot 100 total is four.