"Happy Birthday" is the tenth single of the Japanese boy group NEWS.

It was released on October 1, 2008, in two editions; a regular edition which contains two b-sides: Gan Gan Ganbatte and Push On!, and a limited edition which also contains Happy Birthday and its b-side Gan Gan Ganbatte from the regular edition, as well as another b-side entitled Game of Love and an instrumental version of Happy Birthday.

Happy Birthday is NEWS tenth consecutive number-one single since their debut in 2004.

[1] Happy Birthday was written and composed by Japanese Hip-hop artist SEAMO.

[2] Happy Birthday reached the number-one spot on both the daily and weekly Oricon charts, selling 201,304 copies in its first week; just 38 more copies than their previous single Summer Time, which sold 201,266 copies in its first week.