Horta de Sant Joan (Catalan pronunciation: [ˈɔɾta ðe ˈsaɲ dʒuˈan]) is a village and municipality in comarca of Terra Alta in Catalonia, Spain.

Horta de Sant Joan is the birthplace of Manuel Pallarès, friend and companion of Pablo Picasso.

The Saint Salvador d'Horta monastery, also known as Convent of Angels, is located at the foot of the Santa Barbara Mountain.

The area outside the park boundaries is mostly agricultural, with large tracts of olive, almond, and fruit trees, as well as vineyards.

Horta de Sant Joan has an Interior Mediterranean climate, with very cold winters and extremely hot summers.