Witten is a surname. Notable people with the surname include:

Seiberg-Witten Theory and Random Partitions
Gromov-Witten invariants in algebraic geometry
Equivariant Gromov-Witten invariants
Gromov-Witten theory and Donaldson-Thomas theory, II
The Seiberg-Witten invariants and symplectic forms
Integrability and Seiberg-Witten exact solution
Gromov-Witten classes, quantum cohomology, and enumerative geometry
The 3-manifold invariants of Witten and Reshetikhin-Turaev for sl(2, C)
Virtual Moduli Cycles and Gromov-Witten Invariants of Noncompact Symplectic Manifolds
Remarks on the canonical quantization of the Chern-Simons-Witten theory