Noun

1. A person or group having the ability to influence important decisions, especially in public policy, politics, and business.
   • 1969, "Men of the Year," Time, 3 Jan.,

     In France, a near-revolution by students and workers came close to toppling Charles de Gaulle in May; its economic aftermath in November almost certainly discredited forever Gaullism's vaunted role as the power broker of Europe.

   • 1988, Lewis B. Ware et al., Low-Intensity Conflict in the Third World, Air Univ. Press, ISBN 978-1585660223, p. 139,

     Gen Ali Murtopo—vice chairman of Indonesia's Supreme Advisory Council, former information minister, a major power broker in and out of the army—declared after a meeting with the president that the killings were justified.

   • 2007, Louise Armitstead, "Qataris to seal bid for Nasdaq’s LSE stake," The Sunday Times (London), 16 Sep.,

     The Qatar government, which runs the QIA, will become a major power-broker in determining the future of the London exchange.