Charlton Athletic have placed a red and white scarf on the seat belonging to PC Keith Palmer, who was killed in the terror attack in Westminster on Wednesday.
PC Palmer, who was 48, was stabbed as he protected the Palace of Westminster.
He was a season ticket holder at the League One club, who issued a statement saying they had learned of his death with "great sadness."
"Keith was a familiar face at The Valley to many supporters and sat in his same East Stand seat for many years," the statement said.
As an immediate tribute to hero Keith, a red and white scarf has been placed on the seat which he occupied for many years... #cafc pic.twitter.com/iKZkQufC6i
- Charlton Athletic FC (@CAFCofficial) 23 March 2017
"As an immediate tribute, a red and white scarf has been placed on his seat which will remain until the next home game on Tuesday, April 4th, while the club will discuss ways in which it can commemorate his life at the game itself."
Charlton described PC Palmer as "a true hero who will be greatly missed by all the Charlton family" and offered their condolences to his family and friends.
On Wednesday, Football Association chairman Greg Clarke sent his condolences to those affected by the attack and pledged to pay tribute to them when England face Lithuania on Sunday.