"Molecular Spectroscopy" introduces the topic in a systematic manner and discusses the Quantum Theory of Valence, Molecular Symmetry, Rotational Spectroscopy, Infrared Spectroscopy, Raman Spectroscopy, Electronic Spectra of Diatomic Molecules, Nuclear Magnetic Resonance, Electron Spin Resonance, Mossbauer Spectroscopy, Laser Spectroscopy and Photoelectron Spectroscopy. These topics, are explained with the help of simple exercises using simple language.