Koursaroi
{{Short description|Greek islet in the Aegean Sea}}
{{Unreferenced|date=June 2019|bot=noref (GreenC bot)}}
{{Infobox islands
|name = Koursaroi
|native_name = Κουρσάροι
|native_name_lang = el
|image_name =
|image_caption =
|coordinates = {{coord|35.4817|23.5644|region:GR_type:isle|display=it}}
| map = Greece
| map_caption =
|location =
|archipelago = Cretan Islands
|total_islands =
|area_km2 =
|highest_mount =
|elevation_m =
|country = Greece
|country_admin_divisions_title = Region
|country_admin_divisions = Crete
|country_admin_divisions_title_1 = Regional unit
|country_admin_divisions_1 = Chania
|country_admin_divisions_title_2 = Municipality
|country_admin_divisions_2 =
|country_capital =
|population = 0
|population_as_of = 2001
|density_km2 =
|postal_code =
|area_code =
|registration_plate =
|website =
}}
Koursaroi ({{langx|el|Κουρσάροι}}, "privateers or privateering vessels"), also known as Nisaki ({{langx|el|Νησάκι}}, "small island"), is an islet close to the western coast of Crete, and north-east of the islet of Praso, in the Aegean Sea. Administratively, it is located within the municipality of Kissamos, in Chania regional unit.