| scope="row" style="text-align:left;" | ''[[Winx Club]]''{{refn|group=note|name=winxclub1|Nickelodeon Animation Studio developedseasons 5-7 of ''Winx Club'' in-house, in collaboration with [[Rainbow S.r.l.|Rainbow]]. Viacom owns the copyright to these seasons and co-owns the Rainbow studio itself.}} || {{dts|August 3, 2015}} || {{dts|August 23, 2016}}<ref>https://web.archive.org/web/20160816160608/http://www.nickjr.com:80/tvschedule/</ref>
| scope="row" style="text-align:left;" | ''[[Winx Club]]''{{refn|group=note|name=winxclub1|Nickelodeon Animation Studio produced the ''Winx Club'' [[List of Winx Club episodes#Revived series 2|revival series]], made up of seasons 5-7, in co-development with [[Rainbow S.r.l.|Rainbow]]. Viacom owns the copyright to these seasons and co-owns the Rainbow studio itself.}} || {{dts|August 3, 2015}} || {{dts|August 23, 2016}}<ref>https://web.archive.org/web/20160816160608/http://www.nickjr.com:80/tvschedule/</ref>
The following is a list of programs broadcast by the Nick Jr. channel. It was launched on September 28, 2009 as a spin-off of Nickelodeon's long-running preschool programming block of the same name, which had aired since 1988. The channel features original series and reruns of programming from Nickelodeon's weekday morning lineup. A late-night programming block aimed at parents, NickMom, aired on Nick Jr. from October 1, 2012 to September 28, 2015.[1][2]
The channel replaced Noggin, which was relaunched as a streaming service in 2015 and acts as a separate sister brand. Noggin's programming is distinct from the Nick Jr. channel's; it mainly carried pre-teen-oriented programs at its launch,[3] and its 2015 streaming service features a variety of exclusive series.
Pluto TV, a streaming service purchased by Viacom in 2019, includes a channel dedicated to Nick Jr. programming. The lineup consists of discontinued series from the Nick Jr. block and the TV channel.[4]
^Co-produced by Nickelodeon Animation Studio and HIT Entertainment. Both companies co-own the copyright.
^Nickelodeon Animation Studio produced the Winx Clubrevival series, made up of seasons 5-7, in co-development with Rainbow. Viacom owns the copyright to these seasons and co-owns the Rainbow studio itself.
^Co-produced by Noggin LLC and Sesame Workshop. Both companies co-own the copyright.
^Baisley, Sarah (August 29, 2006). "Wow! Wow! Wubbzy! Debuts on Nick Jr". Animation Work Network. Wow! Wow! Wubbzy! is a Bolder Media for Boys and Girls production in association with IDT/Film Roman. Susan Miller of Bolder Media Inc. and Mixed Media Group and Fred Seibert of Bolder Media Inc. and Frederator Studios, are also exec producers.
^"Archived copy". Archived from the original on September 21, 2018. Retrieved September 21, 2018.{{cite web}}: CS1 maint: archived copy as title (link)
^"Archived copy". Archived from the original on August 17, 2018. Retrieved August 17, 2018.{{cite web}}: CS1 maint: archived copy as title (link)
^Itzkoff, Dave (November 19, 2009). "Nickelodeon's Stepchild, Eager for More Love". The New York Times. Brown Johnson, the Nickelodeon executive who brought "Yo Gabba Gabba!" to Nick Jr., said in a telephone interview that though the show was not a Nickelodeon-owned property, "it fits our brand incredibly well."