All entries must be received by 5pm on Thursday, August 31 and don't forget your name and telephone number.
All winners will have their cards displayed on Age Concern's website www.ageconcern.org.uk/ competition, from Monday, September 11 where members of the public will get the chance to vote for their favourite card to decide the overall winner.
Winners will be asked to write a special message for their grandparents to accompany their entry.
Regional finalists will be announced on Monday, September 11 and the national winner will be revealed on Wednesday, September 20.
Post your entry to Grandparent's Day Card Competition, Age Concern England, Astral House, 1268 London Road, London SW16 4ER.