Example methods and apparatus to facilitate dynamic core selection are disclosed. An example apparatus includes a first processor core of a first type; a second processor core of a second type different from the first type; and software to: access a user-supplied hint indicative of a user preference to execute program code on the first processor core, the user-supplied hint including a user-defined attribute of the program code; monitor performance of the program code on the first processor core; determine, based on the user-defined attribute of the program code, a predicted performance of the program code on the second processor core is better than the performance of the program code on the first processor core; and ignore the user preference by migrating the program code from the first processor core for execution on the second processor core.