Hanna Erenska (Erenska-Radzewska), now Hanna Erenska-Barlo (born 12 November 1946 in Poznan) is a Polish chess Woman Grandmaster.
She was five-time Polish Champion (1971, 1972, 1977, 1979, 1980) and thrice Vice-Champion (1973, 1975, 1984).
She represented Poland in eight Chess Olympiads (1972–1992).
She won individual silver medal in the 5th Chess Olympiad at Skopje 1972 (second board, 7½ points of 9 games), and team and individual bronze medals in the 9th Chess Olympiad at La Valletta 1980 (first board, 9 points of 13 games).Hanna Erenska-Radzewska was awarded the WGM title in 1981, as the first Pole.
Hanna Erenska-Barlo won the European Senior Chess Championship at Bad Homburg 2005, and the 17th World Senior Chess Championship at Gmunden 2007.