Peter Michael Alexander Wilson CMG (born 31 March 1968) is a civil servant whose most recent post was to serve as Director General Europe in the FCDO.

Wilson joined the Foreign and Commonwealth Office (FCO) in 1992 and was posted to Beijing where he studied Mandarin at the University of International Business and Economics.

After Brittan resigned with the rest of the Santer Commission in March 1999, Wilson continued as First Secretary at the UK representation to the EU.

On 8 March 2022 Wilson was announced as Principal Private Secretary to the Prime Minister of the United Kingdom, filling the vacancy that had been left by Martin Reynolds' resignation earlier that year.

[4] However, Wilson vacated the role after six months when Liz Truss became Prime Minister on 6 September 2022 and appointed Nick Catsaras as her new Principal Private Secretary.