Imran Khan and prominent PTI leaders were part of the rally outside the parliament house.
More than a thousand people were present at the Constitution Avenue, chanting slogans against US drone strikes, also calling upon the Supreme Court to take suo moto notice against the strikes.
Security personnel were on high alert and gave full protection to the rally.
The rally began from China Chowk and ended outside the Parliament House.
Earlier, Khan advised the Pakistan Army not to fight America’s war in the country.
He said this while addressing the Waziristan Grand Jirga against drone strikes in Islamabad.
Khan said that the army should halt its operation in the tribal areas as people of that region are against a military action there. The PTI chairman added that "some elements" are manipulating facts to prove that tribal people favour such operations.
He also said that Pakistan is being pressured into initiating an operation in North Waziristan.
A resolution passes at the Jirga against drone attacks asks the Supreme Court to take action against such strikes.
There have been over 270 drone strikes inside Pakistan to date.
You can view a slideshow of images from the rally here.
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