| Masaji Kusakabe | |
| Birth Date: | 7 August 1946 |
| Birth Place: | Chiba Prefecture, Japan |
| Weight: | 69kg (152lb) |
| Status: | Professional |
| Extour: | Japan Golf Tour |
| Prowins: | 20 |
| Japwins: | 8 |
| Otherwins: | 12 |
Masaji Kusakabe (born 7 August 1946) is a Japanese professional golfer.
Kusakabe played on the Japan Golf Tour, winning eight official tournaments and several others.
| No. | Date | Tournament | Winning score | Margin of victory | Runner(s)-up | |
|---|---|---|---|---|---|---|
| 1 | 9 Nov 1975 | Sony Charity Classic | −7 (69-70-70=209)* | 2 strokes |  Danny Edwards,  Hiroshi Ishii, Takashi Murakami | |
| 2 | 11 Sep 1977 | Suntory Open | −9 (66-70-72-71=279) | 3 strokes | Fujio Kobayashi | |
| 3 | 15 Oct 1978 | Tokai Classic | −6 (75-69-66-72=282) | 2 strokes | Kosaku Shimada | |
| 4 | 26 Aug 1979 | KBC Augusta | −12 (67-71-68-34=240)* | 3 strokes |  Kuo Chie-Hsiung | |
| 5 | 9 Sep 1979 | Suntory Open (2) | −11 (66-73-69-69=277) | 1 stroke | Lu Liang-Huan | |
| 6 | 6 Apr 1980 | Aso National Park Open | +1 (72-37=109)* | 1 stroke | Yurio Akitomi, Namio Takasu | |
| 7 | 2 Jul 1981 | Naganoken Open | −6 (67-71=138)* | Shared title with Fujio Kobayashi | ||
| 8 | 11 Dec 1983 | Daikyo Open | −10 (69-70-69-70=278) | 2 strokes | Akio Toyoda | |
PGA of Japan Tour playoff record (0–1)