Romanian numbers are the system of number names used in Romanian to express counts, quantities, ranks in ordered sets, fractions, multiplication, and other information related to numbers.

In Romanian grammar, the words expressing numbers are sometimes considered a separate part of speech, called numeral (plural: numerale), along with nouns, verbs, etc. (Note that the English word "numeral" can mean both the symbols used for writing numbers and the names of those numbers in a given language; also, Romanian număr only partially overlaps in meaning with English number.) Nevertheless, these words play the same roles in the sentence as they do in English: adjective, pronoun, noun, and adverb. This article focuses on the mechanism of naming numbers in Romanian and the use of the number names in sentences.

The symbols for numbers in Romanian texts are the same as those used in English, with the exception of using the comma as the decimal separator and the period or the space (ideally a narrow space) for grouping digits by three in large numbers. For example, in Romanian 1,5 V means one and a half volts, and 1.000.000 or 1 000 000 means one million.

As in other numeral systems, the Romanian number names use a limited set of words and combining rules, which can be applied to generate the name of any number within sufficiently large limits.

The general characteristics of the number formation rules in Romanian are:

Cardinal numbers are the words we use for counting objects or expressing quantity.

The number 0 is called zero. Like in English, it requires the plural form of nouns: zero grade "zero degrees", with grade being the plural form of grad). Unlike English, the reading of number/numeral 0 is always zero and never replaced with words like oh, naught, nil, love, etc.

The number names from 1 to 10 derive from Latin. The table below gives the cardinal numbers in Romanian and the three other Eastern Romance languages (sometimes considered to be its dialects): Aromanian, Megleno-Romanian and Istro-Romanian.