| Sir William Henry Marsh | |
| Office: | Administrator of Hong Kong |
| Term Start: | March 1882 |
| Term End: | March 1883 |
| Predecessor: | Sir Malcolm Struan Tonnochy |
| Successor: | Sir George Bowen |
| Term Start2: | 1885 |
| Term End2: | 1887 |
| Monarch2: | Queen Victoria |
| Predecessor2: | Sir George Bowen |
| Successor2: | Major-General William Cameron Administrator |
| Birth Date: | 1827 |
| Death Date: | 21 July 1906[1] |
| Nationality: | British |
| Profession: | colonial administrator |
Sir William Henry Marsh (1827–21 July 1906; Chinese Translated Name: 馬殊; 馬師 also infrequently used) was a British colonial administrator, who governed Hong Kong twice. The first tenure started in March 1882, and ended in March 1883, when Sir George Bowen succeeded him as the 9th Governor of Hong Kong. The second tenure started in December 1885, and ended in April, 1887, when Major-General William Cameron succeeded him as Colonial Administrator.[2]
Marsh Road in Wan Chai, Hong Kong Island and Marsh Street in Hung Hom were named after him.[3]