Mario Kleff, originally from Boppard, Germany (born November 21, 1967), is an architect, designer, and businessman active in Thailand since 2002. Upon gaining Thai citizenship, he was named Bhumeth Issarasilp and later changed his name to Thiti Teerachin. Mario Kleff continues to be his business and artist name, and as of 2023, it's a registered brand in architecture and decoration in Thailand. For more details, refer to Mario Kleff the architect - a brief biography.