Crossword clues for the word: NKGB The word NKGB has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for NKGB Showing 1 to 4 of 4 results Clue(s) 1940s Soviet secret police org. 1940s USSR secret police Stalin's secret police org. WWII USSR secret police