В Австралии, кроме женского и мужского, ввели "неопределенный" пол для трансгендеров.
«Zie (a gender-specific pronoun) is now legally recognised by the Australian government as neither male nor female, the Scavenger reports.»
http://www.pinknews.co.uk/2010/03/11/australia-is-first-to-recognise-non-specified-gender/