This is a list of notable events, premieres, releases, series cancellations and endings, and other business ventures for Nickelodeon in the year 1993.
- July 11 - Weinerville
- September 11 - Legends of the Hidden Temple
- September 18 - Rocko's Modern Life
- November 28 - The Adventures of Pete & Pete
- April 11 - Doug, season 3
- September 26 - Rugrats season 3; Doug season 4
- November 20 - The Ren & Stimpy Show season 3
- What Would You Do?, 90 episodes
- June - Nickelodeon Magazine publishes its first issue
- The Ren & Stimpy Show Presents: Stimpy's Invention
- Quest for the Shaven Yak Starring Ren & Stimpy
- October - The Ren & Stimpy Show: Veediots!
- November - The Ren & Stimpy Show: Buckaroo$!
- August 31
- Doug, Volume 1: How Did I Get Into This Mess?
- Doug, Volume 2: Patti, You're the Mayonnaise for Me
- The Ren & Stimpy Show, Volume 1: The Classics
- The Ren & Stimpy Show, Volume 2: The Stupidest Stories
- The Ren & Stimpy Show, Volume 3: The Stinkiest Stories
- Rugrats, Volume 1: Tales from the Crib
- Rugrats, Volume 2: A Baby's Gotta Do What a Baby's Gotta Do
- SNICK, Volume 1: Nick Snicks Friendship
- SNICK, Volume 2: Nick Snicks the Family
- May - Nickelodeon signs its first movie deal with 20th Century Fox. This deal would have let Nickelodeon and Fox produce theatrical features during the next two years, and would have included movies based on Doug, Ren & Stimpy, and Rugrats. Unfortunately, the contract period ended before Fox could produce a single Nickelodeon movie. By the time the contract ended, only Ren and Stimpy was in production. The other two shows would not only be revived, but get their own movies released later.
- February 19 - Victoria Justice is born
- May 14 - Miranda Cosgrove is born
- June 26 - Ariana Grande is born
- July 26 - Elizabeth Gillies is born
- August 1 - Leon Thomas III is born
Nickelodeon character debuts
- Rugrats: Susie Carmichael
- Legends of the Hidden Temple: Olmec
- Rocko's Modern Life: Rocko, Spunky, Heffer Wolfe, Filburt, Ed and Bev Bighead, Dr. Paula Hutchison