President Tony Tan Keng Yam has written to Indian President Pranab Mukherjee while Prime Minister Lee Hsien Loong has written to his Indian counterpart Narendra Modi to congratulate them on India's 70th Independence Day.
Both leaders noted that the two countries share long- standing and strong ties which are set to grow with more bilateral collaborations.
"As our people-to-people relations flourish, I am delighted by the excellent progress in bilateral projects and initiatives on various fronts, including trade, skills development, defence cooperation, and Smart Cities development," Dr Tan wrote in his letter to Mr Mukherjee.
"The India-Singapore Strategic Partnership, together with other bilateral agreements, will create new opportunities for collaboration and elevate the bilateral relationship to a higher level."
PM Lee said in his letter to Mr Modi that Singapore and India share a longstanding friendship "underpinned by strong historical, commercial, cultural and kinship ties", and expressed confidence that it will continue to grow.
"I look forward to meeting you again when I visit India in October to explore new avenues of cooperation," Mr Lee added.