Donald Trump owes his son, Don Jr., and his bride, Bettina Anderson, a great gift … because he’s officially skipping their wedding down in The Bahamas.

POTUS announced the news on Truth Social Friday afternoon … telling his followers he would love to be in attendance — but it’s just not a good time for him right now.

He adds it is “important for me to remain in Washington, D.C., at the White House” during this time … but he’s wishing them all the best.

The writing was on the wall with this one … because President Trump told reporters Thursday the Iran War’s got all his attention.

It’s worth noting you can check the Prez’s public schedule online — and he’s spending Saturday at Trump National Golf Club Bedminster in Upstate New York … perhaps taking calls about Iran from the fairway? He’lll be back in the Oval Office Sunday.

Donald Jr. and Bettina’s ceremony is this weekend … but they’re already legally married — having tied the knot on Thursday in Palm Beach, a normal step when getting married outside the country.