| Harold Brook | |
| Birth Date: | 1921 10, df=y |
| Birth Place: | Sheffield, England |
| Death Place: | Sheffield, England |
| Position: | Forward |
| Youthclubs1: | Woodbourn Alliance |
| Youthyears2: | 1938–1939 |
| Youthyears3: | 1939 |
| Youthclubs3: | Hallam |
| Years1: | 1939–1954 |
| Years2: | 1954–1958 |
| Years3: | 1958 |
| Caps1: | 229 |
| Caps2: | 102 |
| Caps3: | 4 |
| Goals1: | 89 |
| Goals2: | 46 |
| Goals3: | 1 |
| Totalcaps: | 335 |
| Totalgoals: | 136 |
Harold Brook (15 October 1921 in Sheffield, England – 1998) was a footballer who played as an inside forward for Sheffield United and Leeds United in the 1940s and 1950s.