Prime Minister John Key is heading to Singapore later this week to attend celebrations on Sunday marking 50 years of independence.
"New Zealand is honoured to be one of a small number of countries invited to celebrate this historic occasion," he said at his post-cabinet press conference.
"It acknowledges the close and warm friendship between our two nations."
This year also marks the 50th anniversary of diplomatic relations between New Zealand and Singapore.
"As two small states in the Asia-Pacific region we share many interests and work closely together on many issues," Mr Key said.
Singapore was a British colony until 1963, when it merged with the Federation of Malaya, Sarawak and Sabah to form Malaysia.
On August 9, 1965, Singapore left Malaysia and became fully independent.