Arifiye is a municipality and district of Sakarya Province, Turkey. Its area is 75 km², and its population 49,340 (2022).[1] It covers the southernmost part of the agglomeration of Adapazari and the adjacent countryside.

Arifiye is situated just to the east of Lake Sapanca. It is almost merged to Adapazari the center of the province and is a part of Greater Sakarya. Arifiye is on Turkish Motorway O-4 and state highway D.100, both of which connect Istanbul to Ankara. It is also an important railway junction.

Arifiye is a part of the ancient region of Bithynia. It later on fell to Roman Empire and Byzantine Empire. In the Middle Ages, it was plundered several times by the Sassanid Persians, Umayyad Arabs and Russians. After a brief occupation by the Seljuk Turks it was returned to Byzantines during the First Crusade. In 1326 Ottoman Turks annexed Arifiye. Although an important stop on Silk Road in the Middle Ages, because of frequent floods of the nearby Lake Sapanca it was not a populous settlement. During Turkish Republic, its population increased and by 1956 it was declared a seat of township. In 2008 the district Arifiye was created from part of the former central district of Adapazari/Sakarya Province, along with the districts Adapazari, Erenler and Serdivan.