Hamiltonian may refer to In mathematics: Hamiltonian system Hamiltonian path, in graph theory Hamiltonian group, in group theory Hamiltonian (control theory) Hamiltonian matrix Hamiltonian flow Hamiltonian vector field Hamiltonian numbers (or quaternions) In physics: Hamiltonian system Hamiltonian mechanics in classical mechanics Hamilton's principle Hamilton-Jacobi-Bellman equation Hamiltonian (quantum mechanics) Molecular Hamiltonian Hamiltonian constraint Hamiltonian fluid mec… (More on Hamiltonian)