ðə kˌɑːnstɪtˈuːʃən ʌvðə dˌɛməkɹˈæɾɪk sˈoʊʃəlˌɪst ɹᵻpˈʌblɪk ʌv sɹˌiː lˈæŋkə, hˈæzbiːn ðə kˌɑːnstɪtˈuːʃən ʌvðɪ ˈaɪlənd nˈeɪʃən ʌv sɹˌiː lˈæŋkə sˈɪns ɪts ɚɹˈɪdʒɪnəl pɹˌɑːməlɡˈeɪʃən baɪ ðə nˈæʃənəl stˈeɪt ɐsˈɛmbli ˌɔn sˈɛvən sɛptˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti ˈeɪt.
The Constitution of the Democratic Socialist Republic of Sri Lanka (, ) has been the constitution of the island nation of Sri Lanka since its original promulgation by the National State Assembly on 7 September 1978.