* Filipino: The national language of the Philippines, widely spoken and understood throughout the province.
* English: A secondary official language in the Philippines and used in education and business.
* Kapampangan: A regional language spoken in the northern and western parts of the province.
* Tagalog: A regional language widely spoken in the southern and eastern parts of the province.
In addition to these, other languages spoken in Nueva Ecija include:
* Ilocano: Spoken by a smaller population in some parts of the province.
* Pangasinan: Spoken by a smaller population in some parts of the province.
It's important to note that the language used in a particular area of Nueva Ecija may depend on the specific community and its history.