Julio Argentino Kaplan Pera (born 25 July 1950, Argentina) is a Puerto Rican chess player, former world junior chess champion as well as software developer and founder of Heuristic Software.
Born in Argentina, he emigrated in 1964 to Puerto Rico, where he was raised and studied.
Later in his life, he emigrated to the United States, where he resides to this day and works for Autodesk.
Earlier in his career, in the 1980s, he programmed dedicated chess computers for SciSys and Saitek.
In the early 1990s he collaborated on the chess program Socrates.