Who knew? The Iranian dress-code-for-non-Muslims-or-not story taught me that there is such a member -- Morris Motamed -- and he is in fact the member set aside to represent Iran's 25,000-person Jewish community. Here's an Australian Broadcasting Corporation story that mentions him, and his status.

Naturally, this doesn't mean that Jews in Iran have equal rights, or are treated well by the government or by fellow citizens -- the presence of a non-set-aside Jewish politician would be much better evidence of social tolerance than the presence of a set-aside one -- but only that Iran's Islamic legal system sometimes yields things that are unexpected to the uninitiated.