Jacques Thibaud (French pronunciation: [ʒak tibo]; 27 September 1880 – 1 September 1953) was a French violinist.
Thibaud was born in Bordeaux and studied the violin with his father before entering the Paris Conservatoire at the age of thirteen. In 1896 he jointly won the conservatory's violin prize with Pierre Monteux (who later became a famous conductor). He had to rebuild his technique after being injured in World War I. In 1943 he and Marguerite Long established the Marguerite Long-Jacques Thibaud International Competition for violinists and pianists, which takes place each year in Paris. From 2011, it has included singers and is now known as the Long-Thibaud-Crespin Competition, in honour of the soprano Régine Crespin.
Thibaud was noted not only for his work as a soloist, but also for his performances of chamber music, particularly in a piano trio with the pianist Alfred Cortot and cellist Pablo Casals. He undertook concert tours with pianist Yves Nat and George Enescu. He was a friend of violinist Eugène Ysaÿe, who dedicated his 2nd Sonata for solo violin to him. Among his students were Manuel Quiroga (the dedicatee of Ysaÿe's 6th solo sonata), Eric Rosenblith, Joan Field and Yfrah Neaman.