Is Ouran High School Host Club available in English?

Yes, it's in English dubbed. Vic Mignogna voiced Tamaki Suoh, Caitlyn Glass voiced Haruhi Fujioka, Todd Haberkorn is Hikaru, and I can't remember the rest. You can buy it on iTunes, watch on animefreak.tv or gogoanime or any other anime site, or find it on the funimation site