The man who created Hershey chocolate was Milton Hershey. He gave the world Hershey in the year 1900. Throughout the years other varieties were invented such as Hershey Kisses, Reese's peanut butter cups and Kit-Kat. You can go visit the Hershey Chocolate World which is located in Hershey Pennsylvania.
Logan Hall and Zach Phillips came up with Hershey Chocolate in the mid 1890's. Hershey company is the one that manufactures it and has from the beginning. They have a bar that is 5 pounds they came out with in 2010 that is almost 40 dollars.
Milton Snavely Hershey invented Hershey chocolate, but not all of the products sold under the Hershey name. Many of those products were invented by others. Milton built the first chocolate plant in 1903 in Derry Church, PA, now called Hershey, PA.