Please remember to follow the manual of style and code of conduct at all times. Check and Bulbanews for up-to-date Pokémon news and discuss it on the or in our IRC channel #bulbagarden on irc.systemnet.info.
User talk:Tycho/List of Pokémon with unreleased Hidden Abilities
The list is a lot smaller now thanks to BW2 and the Dream Park. Now it's just:
Legendary Birds Mewtwo Johto Starters Legendary Beasts Regis Heatran Unova Starters Gothita (though it's evos have been released as male) Litwick line Larvesta line
A lot of the male only pokemon have been released as female too. The only ones that can only be male (that aren't 100% male normally) are Kanto/Hoenn/Sinnoh starters, Elemental Monkeys, Gothorita/Gothitelle.