摘要:In this research, the writer conducted a linguistic study; the study is entitled ADescriptive study of Phonology in Betawi Language. The writer chooses thistopic because the writer is interested in Betawi language especially about theirdialect, so the writer wants to analyze the phonemes and the distribution of thephonemes in Betawi language. The aim of this research is to describe thephonemes and the distribution of the phonemes in Betawi language. In arrangingthis research, the researcher uses a descriptive qualitative method because thereis a description explanation of the data and the data analyzed are in the form ofwords and sentences. In the result of this research Betawi language has 18consonants and 6 vowel phonemes. The consonants consist of three pairs ofvoiceless and voiced stops /p/, /t/, k/ and /b/, /d/, /g/; two affricates /č/ and/j/; two fricatives /s/ and /h/; four nasals /m/, /n/, /ň/ and /ŋ/; twosemi vowels /y/ and /w/; one lateral /l/, and one liquid /r/. The vowels are twohigh vowels /i/ and /u/, two low vowels /e/ and /o/, and two central vowel /a/ and/ə/. For the second problem based on the result of the study, Betawisphoneme occurs initially, medially, and finally, except voiceless consonant/č/ and /h/ cannot occur initially, for voiced consonant stop /b/, /d/, nasal/ň/ and semi vowel /w/, /y/ cannot occur finally and also nasal /ŋ/cannot occur initially. Most of Betawi language has two syllables. The object ofthis research is spoken Betawi language. Five native speakers work asinformants and one as the main informant. This research has the linguisticuniversal as working hypothesis. It aims analyzing the sound as linguistic unitbeside word and sentence. The sound is studied in its phonological form.