| Bill Kajikawa | |
| Birth Date: | 6 September 1912 |
| Player Sport1: | Football |
| Player Years2: | 1934–1936 |
| Player Team2: | Arizona State |
| Coach Sport1: | Football |
| Coach Years2: | 1937–? |
| Coach Team2: | Arizona State (freshmen) |
| Coach Years3: | ?–1978 |
| Coach Team3: | Arizona State (freshmen) |
| Coach Sport4: | Basketball |
| Coach Years5: | 1948–1957 |
| Coach Team5: | Arizona State |
| Coach Sport6: | Baseball |
| Coach Years7: | 1946–1952 |
| Coach Team7: | Arizona State |
| Overall Record: | 88–131 (basketball) 57–70 (baseball) |
William Masao Kajikawa (September 6, 1912 – February 12, 2010) was an American football, basketball, and baseball coach. He served as the head basketball coach at Arizona State University from 1949 to 1957, compiling a record of 88–131, and the school's head baseball coach from 1946 to 1952, tallying a mark of 57–70. Kajikawa was also an assistant and freshmen football coach at Arizona State between 1937 and 1978.
Kajikawa attended Phoenix Union High School and played college football at Arizona State. During World War II Kajikawa was a member of the 442nd Regimental Combat Team. Kajikawa died on February 12, 2010.[1]