Ko te Siege o Rānana he wāhanga o te Wars o nga Roses i waenganui i te 12 me te 15 o Mei 1471, i roto i nei i te mau melo o te Whare o Lancaster whakahaua e Thomas Neville kore i ngana ki te whakaeke i te pa, me te noa Kingi Henry VI, i nei i herea i roto i te Tower o Rānana e tona hoa riri Edward IV o te Whare o York. Tenei whakawā, i ko te epilogue ki nga whawhai tata o Barnet me
Tewkesbury, i whakaoti i te whakaoranga whakamutunga o Edward IV me te whakarite i te Yorkist ki te torona.