| Katsuji Hasegawa | |
| Birth Date: | 3 May 1946 |
| Birth Place: | Chiba Prefecture, Japan |
| Weight: | 73kg (161lb) |
| Status: | Professional |
| Extour: | Japan Golf Tour |
| Prowins: | 9 |
| Japwins: | 2 |
| Otherwins: | 7 |
Katsuji Hasegawa (born 3 May 1946) is a Japanese professional golfer.
Hasegawa played on the Japan Golf Tour, winning twice.
| No. | Date | Tournament | Winning score | Margin of victory | Runner-up | |
|---|---|---|---|---|---|---|
| 1 | 30 Mar 1980 | Shizuoka Open | −5 (71-74-65-73=283) | 1 stroke |  Shinsaku Maeda | |
| 2 | 20 Jun 1993 | Yomiuri Sapporo Beer Open | −13 (65-70-68=203)* | Playoff | Hajime Meshiai |
PGA of Japan Tour playoff record (1–2)
| No. | Year | Tournament | Opponent(s) | Result | |
|---|---|---|---|---|---|
| 1 | 1978 | Gene Sarazen Jun Classic | Shoji Kikuchi, Kesahiko Uchida | Uchida won with birdie on fourth extra hole Hasegawa eliminated by par on second hole | |
| 2 | 1984 | Bridgestone Aso Open | Hideto Shigenobu, Akira Yabe | ||
| 3 | 1993 | Yomiuri Sapporo Beer Open | Hajime Meshiai | Won with birdie on first extra hole |