The Kurdistan Democratic Party (hadak ، hdk) was a political party in Iranian Kurdistan and opposition to the Islamic Republic of Iran, which operated against this government from 1385 to 1401. The first secretary general of the party was Abdullah Hassanzadeh and khrin Khaled Azizi. The intensification of internal divisions among members of the Iranian Kurdistan Democratic Party over the election of the party's leader at the thirteenth Congress in 2006 led to the formation of two separate parties and the Kurdistan Democratic Party (HDK)، split from the Iranian Kurdistan Democratic Party. On 30 August 1401 (21 August 2022) after 16 years, the two parties reunited and continued their joint activities under the name of the Iranian Kurdistan Democratic Party under the single leadership.