Zayn al-Abidin may also refer to:

• Ali al-Sajjad, also known by as Zayn al-Abidin, was the fourth imam in Shia Islam
• Zayn al-Abidin the Great (1395–1470), ninth sultan of Kashmir who ruled from 1418 to 1419 and then from 1420 to 1470
• Zainul Abidin of Aceh (died 1579), sultan of Aceh in northern Sumatra
• Zaynul-ʻÁbidín (1818−1903) Iranian Baháʼí.
• Zainul Abidin (politician) (born 1948), Singaporean diplomat, politician and journalist
• Zainul Abedin (1914–1976), Bangladeshi painter
• Zainul Abedin (politician) (c. 1944–2014), Bangladeshi politician
• Zainulabedin Gulamhusain Rangoonwala (1913–1994), Indian businessman
• Zainulabedin Ismail Hamdulay (born 1970), Indian cardiac surgeon