>>24565078>>24565115>Movie 1 - Mewtwo Strikes Back-Mewtwo is shown in his armor during "The Battle of the Badge".
-During "Showdown at the Po-ké Corral", Mewtwo escapes Giovanni's laboratory and destroys Rocket HQ.
>Movie 2 - The Power of One-James and Ash both reference the events of the second movie during the episode "The Mystery is History"
>Movie 5 - Heroes-Ash recognized a Latios on-sight in "The Semi-Final Frontier!" despite having only encountered one in Altomare.
>Movie 7 - Destiny deoxys-In "Pokémon Ranger - Deoxys' Crisis!", Solana mentions the events of the 7th movie, and that Deoxys appeared via a meteorite. She even talks about the city "LaRousse city" which has only been seen in the movie.
-During "May, We Harley Drew'd Ya!" it's revealed that Drew comes from LaRousse City, which was previously a location only from the seventh movie, Destiny Deoxys.
>Movie 8 - Lucario and the Mystery of Mew-The episode "The Keystone Pops!" makes mention of an "Aura Guardian" with his Pikachu, and heavily references Ash's involvement with the incident at the Tree of Life.
-The two-episode "Pokémon Ranger and the Kidnapped Riolu!" again heavily reference the events between Ash and Lucario in M08.
-The episode before the third gym match in DP, Ash and Brock instantly recognise the attack "Aura Sphere" and Lucario even though they have only seen one in movie.
>Movie 10 - The Rise of Darkrai-Dawn purchased a Lunar Wing at Alamos Town during the events of the Darkrai movie. She is then shown to still have it during Sleepless in Pre-Battle!
>Movie 11 - Giratina and the Sky Warrior-By extension of M10 being canon, M11 is also made canon because it is a direct sequel.
>Movie 12 - Arceus and the Jewel of Life-This also makes M12 canon because the three of them collectively make up a trilogy that all reference each other and build on an over-arching plot.
Missing a few movies but there's a lot of evidence that potentially makes them canon.