Oswald is a preschool educational children's animated television series created by Dan Yaccarino and developed by Lisa Eve Huberman. The show was co-produced by HIT Entertainment and Nickelodeon. The main character is a thoughtful blue octopus named Oswald who lives in an apartment complex.

Overall 26 episodes were produced. In the United States, the series premiered on Nickelodeon (as part of its Nick Jr. block) on 20 August 2001. Reruns were also broadcast on CBS (during the Nick Jr. on CBS block) and on Noggin. When the Noggin brand was relaunched as a streaming service in 2015, all 26 episodes of Oswald were made available for streaming.

Prior to airing, Brown Johnson (senior vice president of Nick Jr.) said "Dan Yaccarino has created an octopus who could be a pre-schooler's best friend".