Cognomen Mastná (Mastná 
) , worldwide, is a rare family name. The family name Mastná is habitual in Eastern Europe, particularly Czechia, where it is a rare surname.
| anna mastná Czechoslovak writer, CZ (b. 1894) |
|
|
|
renata mastná Czech ice hockey player, CZ (b. 1989) |
|
| marta mastná CZ |
|