Yes, Rolls-Royce is a major engine supplier for several Boeing aircraft in 2026. The most prominent example is the Boeing 787 Dreamliner, which offers the Rolls-Royce Trent 1000 as one of its two engine options (the other being the GE GEnx). In early 2026, Rolls-Royce introduced the Trent 1000XE standard, an upgraded version designed to improve durability and reduce maintenance groundings that plagued earlier models. Additionally, Rolls-Royce manufactures the F130 engines for the Boeing-led B-52J Stratofortress modernization program; in 2026, these engines are undergoing final testing to keep the legendary bombers flying for another 30 years. However, Rolls-Royce does not make engines for the Boeing 737 MAX (which uses CFM) or the upcoming 777X (which uses GE). While Rolls-Royce and Boeing have a strong partnership on wide-body and military jets, they remain competitors in the broader aerospace engineering landscape.