I'm being the Prof. Oak for once and ask if Hange from Attack on Titan is male or female?
I cannot remember at all if this was ever settled in the manga. The character appears female from the hair and facial features, but I can't remember ever seeing notable secondary gender characteristics.
On this matter I don't trust translations, be it official or fan-made, so references to the character with the help of pronouns don't count. Please supply clear manga scenes or anime screenshots. Statements from secondary sources like character books (if such a thing exists for AoT) or interview statements from the creator are accepted, too.