1975 (MCMLXXV) was a common year starting on Wednesday of the Gregorian calendar.
| Date | Event(s) | |
|---|---|---|
| February 27 | Birth of Ego Plum, the composer. | |
| September 12 | Birth of Casey Alexander. | |
| September 26 | Birth of Sirena Irwin, the voice of Margaret SquarePants and one of the voices of Betsy Krabs. | |