Jiří Gach is a Czech male given name and surname. It is most commonly found in the Czech Republic.
"Jiří" is the Czech equivalent of the name George. It is a popular first name in the Czech Republic, often associated with Saint George.
"Gach" is a Czech surname. The etymology of the surname is less certain, but it may be derived from a diminutive of a given name, a nickname based on a personal characteristic, or a place name. Without further context, the exact origin of the surname "Gach" is difficult to determine.
Therefore, "Jiří Gach" represents a person of Czech origin, identified by their first name and surname. Information regarding specific individuals bearing this name would require further research to locate and verify biographical details.