Jumada al-Thani (Arabic: جمادى الثاني‎, also transliterated Ǧumādā al-Ṯānī, IPA: [d͡ʒʊˈmæːdæ θˈθæːniː]; also pronounced Ǧamādā al-Ṯānī, IPA: [d͡ʒæˈmæːdæ θˈθæːniː]) is the sixth month in the Islamic Calendar.

It is also known as Jumaada al-Akhir and Jumada al-Akhira (جمادى الآخر, also transliterated Ǧumādā al-ʾĀḫir/jumādā al-āḵir, IPA: [d͡ʒʊˈmæːdæ lˈʔæːxɪr]; also pronounced Ǧamādā alʾĀḫir/jamādā al-āḵir, IPA: [d͡ʒæˈmæːdæ lˈʔæːxɪr]).

This is the sixth month of the Islamic calendar. The origin of the word is as follows: the word Jumda, from which the name of the month is derived, is used to denote dry parched land: land devoid of rain, and hence denote the dry months

The Islamic calendar is a lunar calendar, and months begin when the first crescent of a new moon is sighted. Since the Islamic lunar calendar year is 11 to 12 days shorter than the solar year, Jumada al-Thani migrates throughout the seasons. The estimated start and end dates for Jumada al-Thani are as follows (based on the Umm al-Qura calendar of Saudi Arabia):