Apollo'nia (Α᾿πολλωνία, from Apollo), a city of Macedonia, in the province of Mygdonia (Plin. 4:17), situated between Amphipolis and Thessalonica, thirty Roman miles from the former, and thirty-six from the latter (Itiner. Anton. p. 320, 330; Itin. Hieros. p. 605; Tab. Peuting.). It was south of the lake Bolbe and north of the Chalcidian mountains (Athen. 8, 334). According to Stephen of Byzantium, it was founded by a colony of Corinthians and Corcyrians. The Apostle Paul passed through Amphipolis and Apollonia on his way to Thessalonica (Ac 17:1; see Conybeare and Howson's Life and Epistles of St. Paul, 1, 320, 321). It must not be confounded with a noted Apollonia in Illyria (see Kype, Obs. Sacr. 2, 81 sq.). The city here spoken of was situated on the "Egnatian Way" in the interior of the district of Chalcidice (Scylax, p. 27; Xen. Hist. Gr. 5,2). The ruins are called Pollina (Cramer's Anc. Gr. 1, 264).