Geoffrey Arthur Tibble (27 February 1909 – 12 December 1952) was an English artist. He was prominent in the Objective Abstraction movement.

Geoffrey Arthur Tibble was born in Reading, Berkshire, England on 27 February 1909, as the younger child to Frederick Tibble (1874–1949) and his wife, Eva (née Fereday; 1878–1951). He had an elder brother, Leonard Frederick "John" Tibble (1905–1978).

Tibble was educated at Reading University School of Art. In 1927, at the age of 18, he entered the Slade School of Fine Art, under Henry Tonks, where he was a contemporary of William Coldstream.

Tibble was a significant figure in the short-lived Objective Abstraction movement. In 1934, he exhibited abstract works at the Exhibition of Objective Abstractions at the Zwemmer Gallery, London (works described as "vortices in pigment, suggesting rather than representing something in nature"). He later destroyed or overpainted most of the works from this abstract period.

After briefly experimenting with surrealism, by 1937, Tibble had returned to figurative art, moving toward the Euston Road School of urban realism, which was founded by William Coldstream. In 1944, he became a member of the New English Art Club. He also exhibited with The London Group, after his military service during World War II.

Tibble had his first solo exhibition at Tooth's Gallery in 1946, showing 25 paintings, all interiors with figures, a format that became his signature style and developed his wider reputation. These were critically acclaimed for their "remarkable assurance, the certainty of aim and economy of means" and their resemblance to the work of Degas.

Tibble subsequently exhibited at leading London galleries, including the Leicester and Lefevre galleries.

A review of a retrospective exhibition said, "His work—dingy but packed with period atmosphere—looks back towards the intimate interiors of Vuillard, and forward to the domestic squalor of the Kitchen Sink School".