This is an approximate list of languages by the total number of speakers. It lists 34 languages having more than 45 million speakers. Lists such as these should be used with caution, for the following reasons:
There are also difficulties in obtaining reliable counts of speakers, which vary over time because of population change and language shift. In some areas, there is no reliable census data, the data is not current, or the census may not record languages spoken, or record them ambiguously. Sometimes speaker populations are exaggerated for political reasons, or speakers of minority languages may be under-reported in favour of a national language. However, all such rankings should be used with caution, because it is not possible to devise a coherent set of linguistic criteria for distinguishing languages in a dialect continuum.