Van Gaal is due to take over as the new Red Devils boss later this month, and the former United striker thinks that the former Oranje boss strengthened his reputation as a top-class coach in Brazil.
Speaking to The Telegraph, Owen said: "If there were any doubts about Van Gaal's credentials to become the United manager – and given his CV I doubt there ever were – they must have been eradicated after that destruction of Spain, a fixture which set the tone for a riveting tournament.
"Van Gaal's most eye-catching decision was to substitute goalkeeper Jasper Cillessen for Tim Krul before the quarter-final penalty shoot-out against Costa Rica.
"That encapsulated his single-mindedness but his influence was evident throughout the competition with some of his unorthodox but successful selections. It must have been reassuring for United fans who are desperate for the club to return to their natural home in the Champions League."