All Closures and Refurbishments at Disneyland during January, October and November of 2021

January 2021

May. 30 - No details availableDowntown Disney : Downtown DisneyDowntown Disney West End Closures The following Downtown Disney locations closed in preparation for the construction of a proposed new hotel which has since been canceled. No details on what might be going into the now available retail spaces.
 
AMC Theaters
ESPN Zone
Rainforest Cafe
2019 - Early 2023Disneyland Park : Disneyland ResortMickey & Minnie's Runaway Railway (DLR) The first major Mickey-themed ride-through attraction, is coming to Disneyland’s Mickey’s Toontown in Early 2023 as part of the reimagination of Mickey’s Toontown. The ride will be housed in the El CapiTOON Theater, where Mickey and Minnie are premiering their newest short, Perfect Picnic.
Mar. 14, 2020 - TBDDisneyland Park : Disneyland ResortFinding Nemo Submarine Voyage Finding Nemo Submarine Voyage will close for refurbishment beginning March 14th, 2021. A reopening date has not yet been announced.

October 2021

2019 - Early 2023Disneyland Park : Disneyland ResortMickey & Minnie's Runaway Railway (DLR) The first major Mickey-themed ride-through attraction, is coming to Disneyland’s Mickey’s Toontown in Early 2023 as part of the reimagination of Mickey’s Toontown. The ride will be housed in the El CapiTOON Theater, where Mickey and Minnie are premiering their newest short, Perfect Picnic.
Mar. 14, 2020 - TBDDisneyland Park : Disneyland ResortFinding Nemo Submarine Voyage Finding Nemo Submarine Voyage will close for refurbishment beginning March 14th, 2021. A reopening date has not yet been announced.
Sept. 9 - Nov. 5Disneyland Park : Disneyland ResortBig Thunder Mountain Railroad Big Thunder Mountain Railroad will close for refurbishment from September 9th through November 5th, 2021.
Oct. 4 - TBDDisneyland Park : Disneyland ResortTarzan's Treehouse Tarzan's Treehouse will close for refurbishment beginning October 4th, 2021. Disney has revealed that the attraction is being rethemed though a reopening date has not yet been announced.

November 2021

2019 - Early 2023Disneyland Park : Disneyland ResortMickey & Minnie's Runaway Railway (DLR) The first major Mickey-themed ride-through attraction, is coming to Disneyland’s Mickey’s Toontown in Early 2023 as part of the reimagination of Mickey’s Toontown. The ride will be housed in the El CapiTOON Theater, where Mickey and Minnie are premiering their newest short, Perfect Picnic.
Mar. 14, 2020 - TBDDisneyland Park : Disneyland ResortFinding Nemo Submarine Voyage Finding Nemo Submarine Voyage will close for refurbishment beginning March 14th, 2021. A reopening date has not yet been announced.
Sept. 9 - Nov. 5Disneyland Park : Disneyland ResortBig Thunder Mountain Railroad Big Thunder Mountain Railroad will close for refurbishment from September 9th through November 5th, 2021.
Oct. 4 - TBDDisneyland Park : Disneyland ResortTarzan's Treehouse Tarzan's Treehouse will close for refurbishment beginning October 4th, 2021. Disney has revealed that the attraction is being rethemed though a reopening date has not yet been announced.
Nov. 11 - Dec. 4Disneyland Park : Disneyland Resort"it's a small world" Holiday "it's a small world" Holiday is reportedly closed due to flooding. It is expected to reopen December 4th, 2021.