Indian leaders did not immediately apportion blame for the coordinated strikes on hotels and other targets in Mumbai, which killed more than 100 people, including several foreigners.
Pakistani Foreign Minister Shah Mehmood Qureshi was in New Delhi for talks on the countries' slow-moving peace process when the gunmen struck late on Wednesday.
In a statement, Mr Qureshi said terrorism was 'a menace threatening humanity, and humanity should join hands in fighting this scourge.' He said Pakistan condemns terrorism in all its forms, adding that his nation had suffered greatly while fighting it.
Pakistan and India have fought three wars since independence from Britain in 1947, two of them over Kashmir, the divided and violence-torn Himalayan territory.
Ties have improved in recent years, and Pakistan's new president, Asif Ali Zardari, declared over the weekend that India posed no threat to Pakistan and called for the heavily militarized border to be opened for trade.
However, past terrorist strikes in India have chilled cross-border ties and even brought the nuclear-armed rivals close to war, despite Islamabad's denials of involvement.
India has accused Pakistan in a string of attacks, including the 2001 assault on the Indian parliament in New Delhi by militants fighting Indian rule in Kashmir.
More recently, Indian accused Pakistan's intelligence services of helping Taliban militants bomb its embassy in the Afghan capital in July, killing 58 people.
Pakistani officials say there is no evidence to support the allegations.
Signs that relations between the South Asian neighbors are thawing has raised hope that Pakistan will focus on fighting the Taliban and Al-Qaeda near the Afghan border.
US President-elect Barack Obama has said that America should try to resolve the Kashmir crisis so that Pakistan can focus on combating Islamic militants. -- AP