- January 1, 2000: (The final appearance of Linus and the last interaction between Charlie Brown and Peppermint Patty and Marcie. Rare strip in which the lettering was done by computer due to Charles M. Schulz's failing health. Last narrative daily strip)
- January 2, 2000: (The final appearances of Peppermint Patty and Marcie, and the last Football themed strip)
- January 3, 2000: (The last daily Peanuts comic strip. New Sunday strips would continue to appear until the day after the death of Charles M. Schulz. This strip was later reused on the last ever comic strip from February 13, 2000.)
- January 9, 2000: (The last interaction between Charlie Brown and Rerun and between Rerun and Snoopy)
- January 16, 2000: (The final appearance of Woodstock)
- January 23, 2000: (The last appearance of Snoopy's supper dish, Snoopy’s final speaking role)
- January 30, 2000: (The last strip without Charlie Brown and the final appearances of Rerun and the Little Pigtailed Girl. The 5th panel in this strip was later reused on the last ever comic strip from February 13, 2000.)
| ← December 1999 | February 2000 → |