Ano Ydroussa (Greek: Άνω Υδρούσσα, before 1928: Άνω Κόττορι – Ano Kottori)[2] is a village in Florina regional unit, Western Macedonia, Greece.

[3] In statistics gathered by Vasil Kanchov in 1900, Ano Kottori was populated by 60 Christian Albanians and 168 Bulgarians.

[4] Kanchov wrote that Christian Albanians of the late Ottoman period in Ano Kottori were increasingly being assimilated by its Bulgarian population.

[5] In the early twentieth century, Kato Kotori was involved with the Bulgarian national movement.

[6] In fieldwork done by anthropologist Riki Van Boeschoten in late 1993, Ano Idrousa was populated by Slavophones and Arvanites.