Lawrence Wong to take over as Singapore Prime Minister from Lee Hsien Loong on May 15. Deputy Prime Minister Lawrence Wong is set to succeed Lee Hsien Loong as Singapore's Prime Minister on May 15. The transition, announced by the Prime Minister's Office, will take place at the Istana with Wong being sworn in at 8pm. This leadership change marks a significant moment in Singapore's political landscape as Wong and his fourth-generation team aim to guide the nation forward, building on efforts during the pandemic and other national initiatives.