Based on tape recorded conversations of 28 informants in 18 Louisiana communities, this study investigated regional phonological variants in Louisiana speech. On the basis of settlement history and previous dialect studies, four regions are defined: northern Louisiana, the Florida Parishes, French Louisiana, and New Orleans. The informants are all native English speakers and range in age from 11 to 88 years and in educational level from grammar to graduate school. Numerically the distribution was weighted toward those 60 years or older and those with relatively little formal schooling. Discussion is largely limited to those segmental phonemes which show significant variation. Maps are included for all stressed vowel phonemes and for a few consonants. In the absence of phonological distinctions, northern Louisiana and the Florida Parishes are classed together as Anglo Louisiana. Evidence indicates that patterns of speech in French Louisiana have not spread far outside it; on the other hand, speech in French Louisiana includes many features characteristic of Anglo Louisiana. In several respects, the English of New Orleans follows the usage of French Louisiana; in others, it is more like Anglo Louisiana. Overall, phonological patterns are highly complex and subject to numerous exceptions. (Author/HS)