| Season Number: | 20 |
| Bgcolour: |
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| Network: | TV Tokyo |
| Num Episodes: | 43 |
| Prev Season: | XYZ |
| Next Season: | Ultra Adventures |
| Episode List: | List of Pokémon episodes (seasons 14–present) |
Pokémon the Series: Sun & Moon is the twentieth season of the Pokémon animated series and the first and titular season of Pokémon the Series: Sun & Moon, known in Japan as . This season follows the adventures of Ash Ketchum and Pikachu as they travel to the Alola region, go to Pokémon school with classmates Lillie, Lana, Mallow, Kiawe, Sophocles, participate in the island trials, and learn how to use the power of Z-moves. The season originally aired in Japan from November 17, 2016, to September 21, 2017, on TV Tokyo, and in the United States from May 12, 2017, to December 9, 2017, on Disney XD, making it the first Pokémon series to premiere on that channel. Prior to this, a preview of the first two episodes aired on the network on December 5, 2016.
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The Japanese opening songs are by Satoshi / Ash Ketchum (Rica Matsumoto) with Pikachu (Ikue Otani) for 29 episodes, and the Japanese opening theme song of , by Rica Matsumoto, for 14 episodes to promote the movie. The ending song is "Pose" (ポーズ, Pōzu) by Taiiku Okazaki, and the English opening song is "Under the Alolan Sun" by Jannel Candrice and The Sad Truth, featuring composer Ed Goldfarb. Its instrumental version serves as the ending theme.
Viz Media and Warner Home Video released the entire series on a single 6-disc boxset on DVD in the United States on May 21, 2019.