Dyck refers to a type of mathematical structure known as a Dyck path, which is a staircase-like path that starts at the origin, moves up and to the right, and never goes below the horizontal axis. These paths are often used in combinatorics and can represent various problems, such as counting valid parentheses combinations. In addition to its mathematical context, "Dyck" can also refer to a surname. Notable individuals with this surname include Willem Dyck, a Dutch painter, and Johan Dyck, a historical figure in the field of science. The name may also appear in various geographical locations.