The post contains answer to questions “Who enforced first martial law in Pakistan? Who imposed first martial law in Pakistan?”
Who enforced first martial law in Pakistan?
First martial law in Pakistan was imposed by General Muhammad Ayub Khan
In Pakistan, first martial law was imposed by the then Commander in Chief of Pakistan army, General Muhammad Ayub Khan. On October 7, 1958, President Iskander Mirza abrogated the constitution and imposed martial law in the country. Twenty days later, on 27 October General Ayub Khan deposed Iskander Mirza and became the head of state.
This was first martial law in the series of total four in the country.
Source: Source of above answer is History Of Pakistan Books