- April 1, 1965 (Beginning of a storyline which was later adapted in A Boy Named Charlie Brown)
- April 2, 1965
- April 3, 1965
- April 4, 1965 (This strip is adapted in It's Arbor Day, Charlie Brown)
- April 5, 1965
- April 6, 1965
- April 7, 1965
- April 8, 1965
- April 9, 1965
- April 10, 1965
- April 11, 1965 (This strip is adapted in A Boy Named Charlie Brown)
- April 12, 1965
- April 13, 1965
- April 14, 1965
- April 15, 1965
- April 16, 1965
- April 17, 1965
- April 18, 1965 (This strip is adapted in A Boy Named Charlie Brown)
- April 19, 1965
- April 20, 1965
- April 21, 1965
- April 22, 1965
- April 23, 1965
- April 24, 1965
- April 25, 1965 (This strip is adapted in Charlie Brown's All-Stars)
- April 26, 1965
- April 27, 1965
- April 28, 1965
- April 29, 1965
- April 30, 1965
| ← March 1965 | May 1965 → |
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