Kurdistan Democratic Party may refer to a number of Kurdish political parties:
Iraq Kurdistan Democratic Party (Iraq) (KDP), an Iraqi Kurdish political party led by Massoud Barzani, previously involved in two armed insurgencies for Kurdish Independence in Iraq Kurdistan Democratic Party – Progressive Front, a defunct political party in Iraq
Iran Kurdistan Democratic Party (Iran) (KDP-IRAN), an Iranian Kurdish political party Kurdistan Democratic Party of Iran (KDP-I), a Kurdish political party with its armed wing being involved in the Iranian Revolution and an armed insurgency against the Islamic Regime in Iran
Lebanon Kurdish Democratic Party (Lebanon) (KDP-L), a Kurdish political party
Turkey Kurdistan Democratic Party/North (PDK/Bakur), a Kurdish militant group involved in an armed insurgency for Kurdish independence in Turkey (PDK-T; TKDP), unregistered Kurdish party in Turkey founded in 2014
Syria Kurdistan Democratic Party of Syria (KDP-S), a banned Kurdish political party in Syria Kurdish Democratic Progressive Party (PDPKS), a banned Kurdish political party in Syria which broke away from the KDP–S
Armenia Kurdistan Democratic Party of Armenia, a Kurdish political party in Armenia