| Happy Summer Wedding | |
| Cover: | Happy Summer Wedding (Morning Musume single - cover art).jpg |
| Type: | single |
| Artist: | Morning Musume |
| Album: | Best! Morning Musume 1 |
| Released: | May 17, 2000 (JP) |
| Recorded: | 2000 |
| Genre: | Japanese Pop |
| Length: | 14:08 |
| Label: | Zetima |
| Producer: | Tsunku |
| Prev Title: | Koi no Dance Site |
| Prev Year: | 2000 |
| Next Title: | I Wish |
| Next Year: | 2000 |
is the ninth single of the J-pop idol group Morning Musume, released on May 17, 2000. It sold a total of 990,950 copies, becoming a number-one hit in Japan.
This also marks the last single of Sayaka Ichii and the debut of the "Fourth Generation" Morning Musume members Rika Ishikawa, Hitomi Yoshizawa, Nozomi Tsuji and Ai Kago. This is their first 12 cm CD single.