We present the results of the 2019 night census of the black rhino (Diceros bicornis) population in Tsavo West National Park, Kenya. A dedicated rhino sanctuary was established in 1986 as part of efforts by the Kenyan government to safeguard the remaining populations of the critically endangered black rhino, and now contains more than 13% of the national population. In response to the challenges involved in observing black rhinos in their natural habitat, population numbers in the sanctuary are monitored