pˈæn tʃˈɛŋdɑːŋ; twˈɛnti sˈɪks mˈeɪ nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi fˈoːɹ twˈɛnti sˈɛvən dᵻsˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd nˈaɪnti sˈɛvən wʌzɐ tʃaɪnˈiːz mˌæθɪmɐtˈɪʃən hˌuː mˌeɪd nˈuːmɚɹəs kˌɑːntɹɪbjˈuːʃənz tə nˈʌmbɚ θˈiəɹi, ɪŋklˈuːdɪŋ pɹˈɑːɡɹɛs ˌɔn ɡˈoʊldbɑːxs kəndʒˈɛktʃɚ.
Pan Chengdong (; 26 May 1934 – 27 December 1997) was a Chinese mathematician who made numerous contributions to number theory, including progress on Goldbach's conjecture.