The royal couple touched down at the Noor Khan Airbase, where a red carpet had been rolled out for them.
They were received by Foreign Minister Shah Mahmood Qureshi and his wife along with British High Commissioner Thomas Drew.
Kensington Palace described it as their most complex visit so far and the itinerary for their five-day stay has been kept under wraps.
Red carpet rolls out as Prince William, Kate Middleton arrive in Pakistan
#RoyalvisitPakistan became the top trend in the country on Twitter as users of the micro-blogging site shared their love and appreciation for the royal couple.
A Kensington Palace statement said that the royal couple want to meet as many Pakistanis as possible during their visit.
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