The World Space Observatory Ultraviolet (WSO-UV) is a multinational space mission planned for launch in the early 2020s, designed to fill the gap in ultraviolet (UV) astronomy between the Hubble Space Telescope (HST) and future large UV telescopes. It is based on a 1.7m Ritchey-Chrétien telescope with a focal ratio of F/10, optimized for UV observations. The telescope, T-170M, is developed by the Lavochkin Association in Russia and will be launched on the Zenith 2SB rocket. The satellite will be placed in a geosynchronous orbit at 35,800 km altitude with an inclination of 51.4 degrees. The WSO-UV will include a suite of instruments, including a high-resolution echelle spectrograph (HIRDES), a long slit low-resolution spectrograph (LSS), and a field camera unit (FCU). HIRDES has a spectral resolution of R~50,000 and is designed to provide high sensitivity and resolution comparable to HST/COS. The LSS will provide low-resolution spectra in the range 102-320 nm. The FCU will have three channels: FUV, NUV, and UVO, each covering different UV ranges and providing imaging and spectroscopic capabilities. The FCU will have a large field of view and high sensitivity, with the UVO channel having the largest field of view. The mission is a collaboration between Russia, Germany, China, Italy, and other countries. The spacecraft will be built on the "Navigator" platform, a service module used for other Russian projects. The mission is expected to operate for 5-10 years, providing UV observations that complement the James Webb Space Telescope (JWST) in the same period. The WSO-UV is designed to address the need for UV observations in the post-HST era, before the launch of future large UV telescopes. The mission is expected to provide valuable data for astrophysical research, including studies of planetary science, cosmology, and the chemical composition of astronomical objects.The World Space Observatory Ultraviolet (WSO-UV) is a multinational space mission planned for launch in the early 2020s, designed to fill the gap in ultraviolet (UV) astronomy between the Hubble Space Telescope (HST) and future large UV telescopes. It is based on a 1.7m Ritchey-Chrétien telescope with a focal ratio of F/10, optimized for UV observations. The telescope, T-170M, is developed by the Lavochkin Association in Russia and will be launched on the Zenith 2SB rocket. The satellite will be placed in a geosynchronous orbit at 35,800 km altitude with an inclination of 51.4 degrees. The WSO-UV will include a suite of instruments, including a high-resolution echelle spectrograph (HIRDES), a long slit low-resolution spectrograph (LSS), and a field camera unit (FCU). HIRDES has a spectral resolution of R~50,000 and is designed to provide high sensitivity and resolution comparable to HST/COS. The LSS will provide low-resolution spectra in the range 102-320 nm. The FCU will have three channels: FUV, NUV, and UVO, each covering different UV ranges and providing imaging and spectroscopic capabilities. The FCU will have a large field of view and high sensitivity, with the UVO channel having the largest field of view. The mission is a collaboration between Russia, Germany, China, Italy, and other countries. The spacecraft will be built on the "Navigator" platform, a service module used for other Russian projects. The mission is expected to operate for 5-10 years, providing UV observations that complement the James Webb Space Telescope (JWST) in the same period. The WSO-UV is designed to address the need for UV observations in the post-HST era, before the launch of future large UV telescopes. The mission is expected to provide valuable data for astrophysical research, including studies of planetary science, cosmology, and the chemical composition of astronomical objects.