A : a      (ay?)
 B : bee
 C : cee
 D : dee
 E : e      (ee?)
 F : ef, eff
 G : gee
 H : aitch, haitch
 I : i      (aye?)
 J : jay
 K : kay
 L : el, ell
 M : em
 N : en
 O : o      (oh?)
 P : pee
 Q : cue, queue
 R : ar
 S : ess
 T : tee
 U : u
 V : vee
 W : double-u
 X : ex
 Y : wy, wye
 Z : zee


==== sources ====
Latin letters:
    https://en.wiktionary.org/wiki/Category:en:Latin_letter_names
    https://groups.google.com/d/msg/alt.usage.english/LZRjRbMHPe8/QESjiowrCz8J

Non-latin letters:
    https://en.wiktionary.org/wiki/Category:en:Greek_letter_names
    http://scrabble.merriam.com/foreign-alphabets