Iman is actually a female name. It has a variety of spellings, with Iman being the most popular. Being of Arabic origin the pronunciation is very specific, the first syllable being 'e' as in the second 'e' in elephant, and the second being 'maan', elongating the 'a' as in 'far'.
In Islamic terminology Iman has more meaning than just "faith" or "believing." Iman is fulfillment of three things: 1. Profession of faith with the tongue. 2. Conviction of the truth of this profession in the heart. 3. Implementation and action on the requirements of this profession with the body and the heart.
Princess Iman of Jordan, the daughter of the late King Hussein, is a famous bearer of this name, as is the daughter of Queen Rania and King Abdullah, the current monarchs of Jordan.
My friend is named Iman. She's Bosnian, and often complains that here in the United States, people tend to pronounce her name I-man. She switched schools this year, and goes by "Molly" now. I think it's disappointing that she's abandoning such a unique name (here) in favor of something more common.