Adobogiona (fl. c. 70 BC – c. 30 BC) was an illegitimate daughter of king Mithridates VI of Pontus. Her mother was the Galatian princess Adobogiona the Elder. After the death of her father, Adobogiona married the Celtic noble Castor Saecondarius, tetrach of all Galatians from 41/40 to 37/36 BC. Their son Deiotarus Philadelphus became the last king of Paphlagonia somewhere before 31 BC until his death around 6 AD.