| Henri Mayer | |
| Nickname: | Ya-Ya |
| Birth Date: | 16 January 1878 |
| Birth Place: | Hanover, Germany |
| Death Date: | 1953 or 1955 |
| Death Place: | Hildesheim, Germany |
| Height: | 1.78 m |
| Weight: | 79 kg |
| Discipline: | Track |
| Role: | Rider |
| Ridertype: | Sprinter |
| Show-Medals: | yes |
Henri Mayer (16 January 1878 – 1953 or 1955) was a German track cyclist.[1] He most notably won a silver medal in the sprint event at the 1907 UCI Track Cycling World Championships, as well as bronze medals in 1904 and 1905. He also won the Grand Prix de Paris in 1904, the Grand Prix de l'UVF in 1905 and the in 1904 and 1907.[2]