"Keep it up is all I would say. I hope India wins," Singh said when asked about his message to the Indian cricket team.
Singh, however, will not be travelling to Mumbai to watch India play Sri Lanka on Saturday.
"I will be in Assam then," he told reporters on the sidelines of the Padma awards function at the Rashtrapati Bhawan here.
"The whole nation joins in wishing the Indian cricket team," he said adding that he would be watching the game as he gets time.
Singh had invited Pakistan Prime Minister Yousuf Raza Gilani to watch the World Cup 2011 semi-final at Mohali where India defeated Pakistan by 29 runs [scorecard] to set up the title clash with Sri Lanka.
President Pratibha Patil and Sri Lanka President Mahinda Rajapaksa will be in Mumbai to watch the World Cup final. India, Sri Lanka and Bangladesh were co-hosts of the sporting event.