Ondo State, located in southwestern Nigeria, is home to several languages belonging to the Niger-Congo language family. The primary languages spoken in Ondo State include:

1. Yoruba: This is the predominant language in Ondo State. It belongs to the Defoid group, which is part of the larger Benue-Congo branch within the Niger-Congo family. Yoruba is widely used for communication in daily life, education, and government.

2. Ikale: This language is spoken predominantly by the Ikale people, concentrated in the southern parts of the state. Ikale is considered a dialect of Yoruba.

3. Ilaje: The Ilaje language is spoken by the Ilaje people who live in the coastal areas of Ondo State. Like Ikale, it is sometimes regarded as a dialect of Yoruba.

4. Ondo: The Ondo dialect is spoken by the people in and around the town of Ondo. It is another Yoruba dialect variant with distinct phonetic and lexical features.

5. Akoko: The Akoko languages are a group of dialects spoken in northeastern Ondo State. These include various dialects such as Oka, Arigidi, and others, which exhibit some variations from standard Yoruba.

These languages reflect the rich cultural diversity of Ondo State. Each language has its own unique features, contributing to the rich linguistic tapestry of the region.

For further reading or linguistic research, you might find Ethnologue useful, as it provides detailed profiles on languages spoken worldwide.