Koceljeva (Serbian Cyrillic: Коцељева) is a village and municipality located in the Mačva District of western Serbia. According to the 2022 census results, the population of the village is 4,007, while population of the municipality is 11,148.

Aside from the village of Koceljeva, the municipality includes the following settlements:

According to the 2011 census results, the municipality of Koceljeva has 13,129 inhabitants.

The ethnic composition of the municipality:

The following table gives a preview of total number of employed people per their core activity (as of 2017):