Obi () is a town and Local Government Area in Nasarawa State, Nigeria. it other towns include Adudu Emirate, Agwatashi, Daddare, Jenkwe, Duduguru, Agyaragu, Tudun Adabu, Gude, and Riri.

It has an area of 967 km and a population of 148,874 at the 2006 census.

The postal code of the area is 951.

Climate Temperatures range from to , rarely dropping below or rising beyond , and the weather is typically partly cloudy and overcast throughout the year.

Temperature Obi experiences high temperatures on a regular basis; March is the hottest month with a high of .

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