This book includes peer-reviewed article from the 17^th International Conference on Interconnections between Particle Physics and Cosmology (PPC 2024) held from Oct 14–18 in Hyderabad, India. It presents recent developments in particle physics and cosmology, two rapidly growing fields of modern science connecting the micro- to macro-world. With huge success of standard model of particle physics, the Higgs boson discovery at LHC, along with the discovery of neutrino oscillations and gravitational waves, the search for BSM physics and/or new discovery could be around the corner. Advancements and new directions in collider physics, flavor and neutrino physics, dark matter which makes up a significant portion of the universe, baryogenesis, gravitational waves, early and late universe cosmology, dark energy, observational astronomy, cosmic inflation, nuclear astrophysics, large-scale structure, high energy astrophysics, precision cosmology, and exciting results in both theory and experiments are presented.