| Derek Ryder | |
| Fullname: | Derek Francis Ryder |
| Birth Date: | 18 February 1947 |
| Birth Place: | Leeds, England |
| Position: | Full back |
| Years1: | 1964–1966 |
| Clubs1: | Leeds United |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 1966–1968 |
| Clubs2: | Cardiff City |
| Caps2: | 4 |
| Goals2: | 0 |
| Years3: | 1968–1972 |
| Clubs3: | Rochdale |
| Caps3: | 167 |
| Goals3: | 1 |
| Years4: | 1972–1974 |
| Clubs4: | Southport |
| Caps4: | 82 |
| Goals4: | 2 |
Derek Francis Ryder (born 18 February 1947) is an English former professional footballer who played as a full back.
Ryder began his career with his hometown club Leeds United but was released in 1966 after failing to break into the first team. He joined Cardiff City and, although he again struggled to establish himself, he made his professional debut in the Football League. He signed for Rochdale and went on to make over 150 appearances for the club, helping win promotion to the Third Division.[1] He finished his professional career with Southport.[2]