Some people say that Yamatai was a matriarchal state because it had queens as sovereigns, but this theory is problematic since a king ruled before Himiko and another king ruled right after Himiko's death.
女王を戴いてたことから邪馬台国を女系国家と論じる者もいるが、卑弥呼以前は男王が立ち、卑弥呼の死後もまず男王が立っていることから、これは疑わしい。