- December 1, 1975
- December 2, 1975
- December 3, 1975
- December 4, 1975
- December 5, 1975
- December 6, 1975 (End of the storyline on which the segment "Linus and the Blanket" from the episode "Snoopy's Robot" of The Charlie Brown and Snoopy Show is partially based)
- December 7, 1975
- December 8, 1975 (This strip and the four following the next strip are adapted in the segment "Teaching" of the 1983 The Charlie Brown and Snoopy Show episode "Snoopy's Football Career")
- December 9, 1975 (The day of the first performance of Snoopy!!! The Musical, and A Charlie Brown Christmas' 10th anniversary. This strip and the following three strips are adapted in the episode "Amateurs" from the 2014 French TV series Peanuts)
- December 10, 1975
- December 11, 1975
- December 12, 1975
- December 13, 1975
- December 14, 1975
- December 15, 1975 (This strip is adapted in Bon Voyage, Charlie Brown (And Don't Come Back!!))
- December 16, 1975 (Beethoven's birthday)
- Decemebr 17, 1975
- December 18, 1975 (The first reference to Mr. Frick)
- December 19, 1975
- December 20, 1975
- December 21, 1975 (This strip is adapted in the episode "The Mysteries of Love" from the 2014 French TV series Peanuts)
- December 22, 1975
- December 23, 1975
- December 24, 1975
- December 25, 1975
- December 26, 1975
- December 27, 1975
- December 28, 1975
- December 29, 1975
- December 30, 1975
- December 31, 1975
| ← November 1975 | January 1976 → |