|Time zone||TRT ( UTC+3)|
Kireçburnu is a neighbourhood in the municipality and district of Sarıyer, Istanbul Province, Turkey.  Its population is 6,888 (2022).  It is located on the northern shore of Bosphorus at European side.  It is to the north of İstanbul centre with a distance over 15 kilometres (9.3 mi).
During the Byzantine Empire era Kireçburnu was a village named Kleidai tou Pontou. During the construction of Rumeli Castle by the Ottoman Sultan Mehmet II, the limekilns in the village were used as the construction material of the castle.  Turkish for lime is kireç and for cape is burun; eventually the village was called Kireçburnu. As the urban fabric of İstanbul expanded Kireçburnu became a neighborhood of the city.
Kireçburnu is bordered by Tarabya in the south. The neighborhood is well known for its fish food restaurants.