Abdullah bin Hamad bin Khalifa Al Thani (born 9 February 1988) is the Deputy Emir of the State of Qatar and unofficial heir presumptive to Emir of Qatar. He is the son of the 7th and former Emir, Sheikh Hamad bin Khalifa Al Thani, and a younger half-brother of the 8th and current Emir, Sheikh Tamim bin Hamad Al Thani.