Guillaume Bochetel, seigneur de Sassy, Brouillamenon, Laforest-Thaumyer (died 1558) was a statesman and diplomat of the French Renaissance during the reigns of François I and Henry II of France.
In 1540 he bought from Jean Courtois Breuilhamenon the lordship of the lands in Berry.
He began his career with the office of clerk of aid and gabelles in Berry.
In December 1529, the king asked him to accompany the Vicomte de Turenne in Spain to negotiate his third marriage to Eleanor of Austria, Charles V's sister, a widow of King Manuel I of Portugal On 22 August 1530, the king appointed him secretary, of royal finances and entrusted the office of Secretary of royal finances and acts Royal two years later.
In May 1535, he left with the Royal Admiral Philippe Chabot to Calais to negotiate with England.