5 species have Pressure as a hidden ability, 24 as a normal one

Effect, in PokéAPI's words

“Increases the PP cost of moves targetting the Pokémon by one.”

As a hidden ability

Species	Slot	Note
Wailmer	Hidden	Since Generation V
Wailord	Hidden	Since Generation V
Pawniard	Hidden
Bisharp	Hidden
Kingambit	Hidden

As a normal ability

Species	Slot	Note
Aerodactyl	Normal
Articuno	Normal
Zapdos	Normal
Moltres	Normal
Mewtwo	Normal
Raikou	Normal
Entei	Normal
Suicune	Normal
Lugia	Normal
Ho-Oh	Normal
Dusclops	Normal
Absol	Normal
Deoxys	Normal
Vespiquen	Normal
Spiritomb	Normal
Weavile	Normal
Dusknoir	Normal
Dialga	Normal
Palkia	Normal
Giratina	Normal
Kyurem	Normal
Corviknight	Normal
Eternatus	Normal
Sneasler	Normal

Elsewhere in PokéAPI

7 more holders without a page here

Alternate forms and other species that PokéAPI lists with Pressure.

Deoxys Attack, Deoxys Defense, Deoxys Speed, Eternatus Eternamax, Corviknight Gmax, Dialga Origin, Palkia Origin