Nguyen was scheduled to competed at the American Cup but withdrew due to injury. After he recovered he competed at the Stuttgart World Cup where he finished fourth behind Artur Dalaloyan, Sun Wei, and Petro Pakhniuk. Nguyen competed at the European Championships in April where he was the first reserve for the parallel bars. At the German National Championships Nguyen finished second in the all-around behind Andreas Toba but finished first on floor exercise and parallel bars. Additionally he finished third on high bar and rings. Nguyen was selected to represent Germany at the 2019 World Championships; however he tore a tendon in his shoulder and had to withdraw.