Mesokampos (Greek: Μεσόκαμπος, before 1926: Ορτά Ομπά – Orta Oba)[2] is a village in Florina Regional Unit, Macedonia, Greece.

The 1920 Greek census recorded 165 people in the village, and 165 inhabitants (33 families) were Muslim in 1923.

[3] Following the Greek–Turkish population exchange, Greek refugee families in Orta Ompa were from East Thrace (1) and Asia Minor (8) in 1926.

[3] The 1928 Greek census recorded 179 village inhabitants.

[3] In 1928, the refugee families numbered 35 (181 people).