Ankylophobia: Fear of immobility of a joint
Antlophobia: Fear of floods
Anuptaphobia: Fear of staying single
Aphenphosmphobia: Fear of being touched
Apotemnophobia: Fear of amputees
Arachibutyrophobia: Fear of peanut butter sticking to the roof of their mouth.
Asthenophobia: Fear of fainting/weakness
Astrophobia: Fear of stars or celestial space