William "Billy" Sánchez Tosado (born 1966) is a former Sergeant-at-Arms of the Senate of Puerto Rico. Sánchez has served in the position since January 2009. Before that, he served as Director of the Office of Public Housing.
Sánchez was born in 1966 in Bayamón, Puerto Rico. He received a Bachelor's degree in Educational Technology from the Bayamón Central University. He also received another degree in Security and Protection from the University of Puerto Rico.
Sánchez began working as a public servant in his hometown of Bayamón, under the mayoralty of Ramón Luis Rivera. During the governorship of Pedro Rosselló, he also served as Director of the Office of Public Housing.
In January 2009, Sánchez was appointed by Thomas Rivera Schatz as Sergeant-at-Arms of the 24th Senate of Puerto Rico.
Sánchez has two sons.
In 2012, Sánchez was involved in a scandal of alleged domestic abuse when he allegedly threatened an ex-partner. As a result, Sánchez had his license to carry weapons revoked, and seven firearms were taken from his possession.