[1] The site of Olba, within the broader Olbian region, was identified by archaeologist Theodore Bent and his wife in March 1890, during their survey of part of Cilicia Tracheia.

[3] According to Greek mythology, Olbe had been built by Ajax, half-brother of Teucer; it contained a temple of Zeus, whose priest once ruled over all Cilicia Aspera.

[4] Strabo described it: The temple would have been closed when Christianity was introduced during the persecution of pagans in the late Roman Empire.

Olba was a suffragan of the Metropolitan of Isauria's provincial capital Seleucia, but faded like most sees in Asia Minor.

Olba maintained a sizable Christian population in the 4th and 5th centuries, when the Temple of Zeus was converted into a church.

In 1927 it was suppressed, having had the following incumbents, all of the fitting Episcopal (lowest) rank: In 1933 it was again restored as titular bishopric of Olba.