The name Nemo is a boy's name of Greek origin meaning "nobody". Nemo and is often added to lists like Unique Baby Names Ending In O and discussed in our forums with posts like "Olivia and Ian: A Brother - Sister Name Chain".
From the experts:
One of the best known early Nemos was the captain in Twenty Thousand Leagues under the Sea, while the more familiar modern one is the animated little orange fish in the Disney movie. Unusual name well worth considering. By the way, there is also a Shakespearean Nemo and one in Dickens's Bleak House. An enchanting early comic strip by Winsor McCay was called Little Nemo.