Neutrinos are intriguing fundamental particles: they have tiny masses and no electrical charge, and despite being very abundant their low interaction rates make them challenging to detect. A neutrino of a particular type (electron, muon, tau neutrino) is also a superposition of multiple neutrinos with slightly different masses, and that allows them to change flavors as they propagate through space. Understanding the properties of neutrinos is vital to complete the picture of the Standard Model of particle physics, and is significant for astrophysics, cosmology and new physics models. NOvA is a long-baseline neutrino oscillation experiment, which consists of two finely-segmented liquid-scintillator detectors operating 14 mrad off-axis from the NuMI muon neutrino beam. With an 810 km baseline, the measurements of muon neutrino disappearance and electron neutrino appearance allow the determination of neutrino oscillation unknowns, namely the mass hierarchy, the octant of the largest neutrino mixing angle, and the CP violating phase. In this talk, I will present the latest neutrino oscillation results from three years of data taking by the NOvA experiment. This update includes 50% more data than previous results as well as simulation and analysis improvements.