Nawaz Sharif said his government would establish friendly ties with India, and added that he would invite Manmohan Singh for his oath-taking ceremony to Islamabad, reported Dawn.
He made the remark while talking to foreign correspondents at his palatial residence in Raiwind.
Unofficial results show that his party, Pakistan Muslim League-Nawaz, has emerged the single largest party in the National Assembly, with cricketer-turned-politician Imran Khan's Pakistan Tehreek-e-Insaf standing second and the ruling Pakistan Peoples Party pushed to the third spot.
Sharif called upon the PTI to respect the mandate of the people and accept the results of the elections.
He added that his government would devise a national policy to tackle terrorism.
"We will contact every party for the purpose of forming our policy on terrorism," Sharif said.
On US drone attacks, he said his government would try to persuade America to stop these.