A minister who tried to save the life of the police officer murdered in the Westminster attack is one of two MPs honoured for their response to the atrocity.
Downing Street has announced that the Queen was "pleased" to approve the appointment of Tobias Ellwood and security minister Ben Wallace to the Privy Council.
Mr Ellwood, a Foreign Office minister, ran towards gunfire to help PC Keith Palmer, who was stabbed by Khalid Masood after he entered the grounds of the Palace of Westminster.
Mr Wallace helped coordinate the Government's response to Wednesday's terror attack, which left five people dead, including 52-year-old Masood.
The MPs will now be entitled to be referred to as "Right Honourable" and receive top-secret national security briefings as members of the Privy Council.
It is mostly made up of senior politicians, but also includes some bishops and judges, and has advised the monarch since the Norman era.
Prime Minister Theresa May praised the "extraordinary" bravery of Mr Ellwood when she addressed the Commons on Thursday.
The image of the Bournemouth East MP with blood on his face and clothes as he tried to give PC Palmer mouth-to-mouth resuscitation has become one of the defining images of the attack.
His heroic efforts were unfortunately in vain as PC Palmer, a husband with a five-year-old daughter, died from his injuries.
The MP's bravery was praised by many of his colleagues, who gathered in the Commons chamber to listen and respond to the Prime Minister's statement on the terror attack.
But Mr Ellwood, whose brother Jonathan was killed in the 2002 Bali bombing, shook his head as a fellow MP called for him to be recognised in the honours list.
A Government spokesman said their appointments were "in recognition of their service as ministers and the roles both have played in responding to this week's terrorist attack".