The list of those interrogated by the government in the aftermath of the failed Gunpowder Plot is long and extensive, however, many of those had little more evidence to offer than witnesses to much earlier events, or the comings and goings of the core group of conspirators.

The plot however should not be thought of as something that involved only the principal thirteen, there were many others who were implicated, tried, and convicted of complicity. Some of those suffered the same fate as Guy Fawkes, many others escaped with fines, or the knowledge that their names had forever been blackened by their apparent association. Men such as the Littletons Stephen and Humphrey, the Wintour's younger half-brother John, Sir Edmund Baynham, messenger to the Pope, and Sir William Stanley, kin to the Earl of Derby and known to be in league with the Spanish. This page provides a list of names of those involved in the plot in some way, whether confederates, or unwitting accomplices.

In the list below, spelling variations of the persons name as they appear in various records are included.