dʒˈɛfɹi ˈɑːɹθɚ tˈɪbəl twˈɛnti sˈɛvən fˈɛbɹuːˌɛɹi nˈaɪntiːnhˈʌndɹɪd nˈaɪn fˈɪftiːn dᵻsˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd fˈɪfti tˈuː wʌz ɐn ˈɪŋɡlɪʃ ˈɑːɹɾɪst pɹˈɑːmɪnənt ɪnðɪ ɑːbdʒˈɛktɪv ɐbstɹˈækʃən mˈuːvmənt.
Geoffrey Arthur Tibble (27 February 1909 – 15 December 1952) was an English artist prominent in the Objective Abstraction movement.