List of members in East Bengal:[1][2] List of members from Punjab, Sindh, North West Frontier Province, Federally Administered Tribal Areas, and Balochistan:[3][4] Due to war of 1971, East Pakistan separated and became Bangladesh.

Only Tridev Roy and Nurul Amin remained in Pakistan.

NW-47 Jhang-II Moulana Muhammad Zakir of Markazi Jamiat Ulema-e-Pakistan died in 1975 and Sardarzada Muhammad Ali Shah of PPP elected in by-election.

NW-121 Hyderabad-IV Zulfikar Ali Bhutto of PPP vacated and Haji Ali Ahmed Khan of PPP elected in by election.

NW-136 Quetta-II Khair Bakhsh Marri of NAP(W) vacated and Taj Muhammad Jamali of CML elected by-election.