Tony Blair said the celebrations of Baroness Thatcher's death were in "poor taste".
Speaking to BBC Radio Ulster, he said: "Even if you disagree with someone very strongly, you can still particularly at the moment of their passing, you should show some respect."
Mr Blair was asked if he worried there would be similar celebrations when he dies.
He replied: "When you decide, you divide. I think she would be pretty philosophical about it and I hope I will be too."
Read: Margaret Thatcher's legacy.
Read: Thatcher funeral next Weds.
More top news
Nearly 750,000 people worldwide have died with Covid-19.
Marion County Sheriff Billy Woods said he had weighed both sides of the issue.
It was not until August 15 1945, days after US atomic bombs fell on the Japanese cities of Hiroshima and Nagasaki, that the battle in Asia w