Lacko Family History
Lacko Surname Meaning
Hungarian (Lackó): from a pet form of the personal name László (see Laszlo). Slovak Rusyn (from Slovakia) Czech (Moravian) Croatian and Slovenian: from a pet form of the personal name Ladislav (see Lacek).
As a Rusyn name it may also be from a pet form of the personal name Lazar. Compare Latsko.
Source: Dictionary of American Family Names 2nd edition, 2022
