For reference, this table shows the complete Greek alphabet, including both upper and lower-case letters, with their classical names as used in math and science classes or by fraternities and sororities, followed by a representation (in parentheses, and written for English-speakers) of the way modern Greeks pronounce them. At the right you can see the sound or sounds that each letter stands for. A few explanatory notes are down at the bottom. I didn’t put stress marks on any of the modern Greek letter names except the last one, oméga. That’s the only letter whose name doesn’t have the stress on the first syllable.