| How Long | |
| Type: | single |
| Artist: | Fats Domino |
| B-Side: | Dreaming |
| Genre: | Rhythm and blues |
| Length: | 2:00 |
| Label: | Imperial |
| Prev Title: | Poor Poor Me |
| Prev Year: | 1952 |
| Next Title: | Nobody Loves Me |
| Next Year: | 1953 |
"How Long" is a song written by Fats Domino and Alvin E. Young and performed by Fats Domino. In 1952, it reached No. 9 on the U.S. R&B chart.[1]