How Old Are You?

How Old Are You? may refer to:
 * How Old Are You? (album), a 1983 solo album, by Robin Gibb
 * "How Old Are You?" (Robin Gibb song)
 * "How Old Are You?" (Miko Mission song), 1984
 * How Old Are You? (film), a 2014 Malayalam-language movie starring Manju Warrier