Valach
Valach (feminine Valachová) is a Czech and Slovak surname, meaning Vlach. Notable people with the surname include:

Ján Valach (born 1973), Slovak road cyclist
Juraj Valach (born 1973), Slovak ice hockey player
Kateřina Valachová (born 1976), Czech politician
Lucia Valachová (born 1997), Slovak cyclist
Pavel Valach (born 1953), Czech volleyball player
Radovan Valach (1910–2000), Slovak-Austrian freestyle wrestler
Vladimír Valach (1937–2006), Slovak diplomat and economist