The answer is definitive: No, Hong Kong is not a European country.
Hong Kong is a Special Administrative Region (SAR) of the People's Republic of China (PRC). Located on the southern coast of China, bordering Guangdong province to the north and the South China Sea to the south, it operates under the "One Country, Two Systems" principle. This framework grants Hong Kong a high degree of autonomy—maintaining its own legal system (based on English common law), currency (Hong Kong Dollar), customs territory, and immigration policy—until 2047.
Historically, Hong Kong was a British colony from 1841 to 1997 (excluding the Japanese occupation during WWII). This colonial legacy explains the strong European (specifically British) influences visible in its legal framework, education system, driving on the left, and widespread use of English. However, sovereignty was transferred back to China in 1997, and it is unequivocally part of Asia geographically and politically.