Joseph E. "Joe" Sinnott (born c. 1966) was the 50th mayor of Erie, Pennsylvania.
A lifelong resident of Erie, Sinnott graduated from Academy High School in 1984, and Gannon University in 1988 with a B.S.
He was accepted to Case Western Reserve University School of Law in 1996 and graduated in 1999.
He joined the firm of Quinn, Buseck, Leemhuis, Toohey & Kroto in Erie, concentrating on environmental and commercial litigation and later practiced municipal and family law with Erie's Carney & Good for several years.
In 2005, he successfully ran for mayor of Erie, taking office on January 2, 2006.