| Harold Nicholls | |
| Fullname: | Harold Garwood Nicholls |
| Nickname: | Doc |
| Birth Date: | 19 November 1897 |
| Birth Place: | Wellington, New Zealand |
| Death Place: | Whakatāne, New Zealand |
| Teama: | Wellington |
| Yearastart: | 1919 |
| Yearaend: | 1921 |
| First: | RU |
| Ru Position: | Second five-eighth |
| Ru Club1: | Wellington |
| Ru Year1start: | 1915 |
| Ru Year1end: | 1923 |
| Ru Appearances1: | 12 |
| Ru Teama: | New Zealand |
| Ru Yearastart: | 1923 |
| Ru Appearancesa: | 1 |
| Ru Triesa: | 0 |
| Ru Goalsa: | 0 |
| Ru Fieldgoalsa: | 0 |
| Ru Pointsa: | 0 |
| New: | yes |
Harold Garwood Nicholls (19 November 1897 - 10 August 1977) was a New Zealand rugby football player who represented New Zealand in rugby union. Two of his brothers, Mark and Harry, also represented the All Blacks.
Nicholls played for the Petone Rugby Club and was the eldest of three brothers.[1]
He first played for Wellington in 1915 before serving in the military for the rest of World War I. In 1919 he again played rugby union for Wellington before switching codes to rugby league. In rugby league Nicholls also represented Wellington for two seasons.[2]
Nicholls was allowed to switch again in 1922 and played rugby union for Wellington in 1922 and 1923. In 1923 he was selected for the All Blacks against the touring New South Wales side and played in one match.[1]