Cik Dat bin Anjang Abdullah (2 October 1923 – 13 January 2024), commonly known as Abdullah CD, was a Malaysian politician who served as chairman and General Secretary of the Communist Party of Malaya (CPM)

Abdullah was born on 2 October 1923, in Parit, Perak, to Malay parents of Minangkabau descent. His political involvement was sparked by interest in the Maharajalela Wars against the British. As a young man, he joined the Kesatuan Melayu Muda (KMM). He became KMM secretary in the Lambor district in Perak during the early stages of the Japanese occupation.

After World War II, Abdullah CD was involved in the setting up of the Malay Nationalist Party (in Malay, the Parti Kebangsaan Melayu Muda; PKMM) in October 1945 with other early leftist Malay leaders such as Mokhtaruddin Lasso, Dr. Burhanuddin al-Helmy, Ahmad Boestamam, Ishak Haji Muhammad, amongst others.

He was also responsible for organising the Malay labour movement and was elected vice-president of the Pan-Malayan Federation of Trade Unions (PMFTU).

Not long before the declaration of emergency in Malaya in June 1948 by the British colonial government, Abdullah CD, Dr Burhanuddin Helmi, and Ahmad Boestamam met to discuss the conditions and the steps to be taken in the struggle for Malayan independence. When the British declared an emergency, Abdullah led many members from the CPM, PKMM, API (Angkatan Pemuda Insaf), AWAS, and PETA into an anti-British guerrilla revolution in the jungles of Malaya. In July 1948, he was captured in north Pahang, but he managed to escape.

On 12 May 1949, Abdullah started the 10th Regiment of the CPM in Temerloh, Pahang.

Abdullah was involved in many armed battles against the British and suffered serious injuries from a hand grenade explosion.

Abdullah CD continued to be the leader of the 10th Regiment, until peace was achieved in 1989.