| Bert Grenside | |
| Birth Name: | Bertram Arthur Grenside |
| Birth Date: | 9 April 1899 |
| Birth Place: | Hastings, New Zealand |
| Death Place: | Waipukurau, New Zealand |
| Ru Position: | Wing three-quarter |
| Height: | 1.830NaN0 |
| Weight: | 86kg (190lb) |
| Repyears1: | 1928–29 |
| Repcaps1: | 6 |
| Reppoints1: | 9 |
| Ru Provinceyears1: | 1919–31 |
| Ru Provinceapps1: | 87 |
| Ru Provincepoints1: | 331 |
| Occupation: | Farmer |
Bertram Arthur Grenside (9 April 1899 – 2 October 1989) was a New Zealand rugby union player. A winger, Grenside represented at a provincial level. He was a member of the New Zealand national side, the All Blacks, on the 1928 tour of South Africa and 1929 tour of Australia. On those tours, he played 21 matches for the All Blacks, including six internationals, scoring 42 points in all.[1]