Prime Minister Lee Hsien Loong and the People's Action Party (PAP) have several messages of congratulations for the win at the Sept 11 General Election.
Malaysian Prime Minister Najib Razak posted on Twitter that he had spoken to and congratulated Mr Lee on the PAP's victory in the General Election.
"We both look forward to strengthening the already strong and warm relationship between our two nations," he wrote.
Mr Lee replied to Mr Najib on Twitter: "Thank you @NajibRazak, and thanks for calling! Look forward to continuing our work to enhance our bilateral ties."
A statement from the Indian government released yesterday said the country's Prime Minister Narendra Modi congratulated PM Lee and the PAP and added that he looked forward to working together to further deepen bilateral ties.
Mr Kirk Wagar, the United States ambassador to Singapore, also congratulated PM Lee and the PAP.
He said in a statement that Singaporeans had "once again united to demonstrate their commitment to free and fair elections".
"As strong supporters of good governance, the United States and Singapore set an example for the world. We share many common values, including respect for the rule of law. Our two nations have worked hard to build a strong, strategic bilateral relationship so we can jointly address common regional and global challenges," he said.
Malaysian Chinese Association (MCA) president Liow Tiong Lai also sent his best wishes.
He told reporters in Kangar, after opening the Perlis MCA convention yesterday, that the mandate given to the PAP showed Singaporeans' wish for unity and continuous development.
Separately, Penang Chief Minister Lim Guan Eng said the results showed that Singaporeans voted for good governance and clean leadership - traits that Singapore is famous for, The Star newspaper reported.
"In such times, especially when we are facing economic uncertainties, it is important to have a clean leadership and good governance to face and overcome the economic challenges," he said at an event in Bukit Mertajam.