If you are planning to apply for a visa to Germany as a tourist, student or a businessman then you can apply through the German Embassy Islamabad.
The address of the German Embassy in Islamabad is given below
Diplomatic Enclave, Ramna 5
German Consulate in Karachi
People living in Karachi and interior Sindh can visit the German consulate Karachi to
92-A/7, Block 5, Clifton
German Consulate in Lahore
2 Main Gulberg