A is for Admiral Aaron
B is for Berengaria VII, where Spock once saw an actual native dragon.
C is for Cytherians, who want you to pay them a visit
D is for Dolim
E is for Edith Keeler
F is for Frank, young Jim Kirk's mean and abusive uncle in deleted footage from TREK 2009.
G is for Gorn
H is for Hikaru Sulu
I is for Ivor Prime, a Federation outpost attacked by the Borg in late 2373.