- December 1, 1979:
- December 2, 1979:
- December 3, 1979: (Start of a "Nermal week").
- December 4, 1979:
- December 5, 1979:
- December 6, 1979:
- December 7, 1979:
- December 8, 1979: (End of a "Nermal week").
- December 9, 1979:
- December 10, 1979:
- December 11, 1979:
- December 12, 1979:
- December 13, 1979:
- December 14, 1979:
- December 15, 1979:
- December 16, 1979:
- December 17, 1979: (Start of storyline about Garfield getting stuck in the blind).
- December 18, 1979:
- December 19, 1979:
- December 20, 1979:
- December 21, 1979:
- December 22, 1979: (End of storyline about Garfield getting stuck in the blind).
- December 23, 1979:
- December 24, 1979:
- December 25, 1979: (Christmas Day and the only Christmas comic from 1979.)
- December 26, 1979:
- December 27, 1979: (Garfield breaks the fourth wall).
- December 28, 1979:
- December 29, 1979:
- December 30, 1979:
- December 31, 1979: (The last comic strip of 1979, and the 1970's.)
| ← Garfield, November 1979 | Garfield, January 1980 → |