OKB Gidropress
| Company type | Joint-stock company |
|---|---|
| Founded | 1946 |
| Headquarters | , Russia |
| Products | Nuclear reactors |
| Parent | Rosatom |
| Website | www |
OKB Gidropress (Russian: ОКБ Гидропресс) is a Russian state construction office which works on the design, analysis, development, and production of nuclear power plant reactors, most notably the VVER range. OKB stands for experimental design bureau (опытно-конструкторское бюро, opytno-konstruktorskoe bjuro).