Svnw688 saidI don't wear rings, but if and when I get married, I hope to wear the band on my left hand, fourth ("ring") finger, per U.S. custom as Art_Deco rightly stated.
I believe the wedding finger varies in some countries.
But here's a story I love to tell here, so RJ veterans can skip this now.
When my late partner & I were on a relocation trip in 2002, we wore matching "wedding" bands on our left hands. Just cheap costume jewelry, each having 6 embedded rainbow stones. We couldn't be legally married in any State we lived, the rings were just symbols to us.
So we were staying overnight in Council Bluffs, Iowa, right on the border with Omaha, Nebraska (which has a fantastic gay club). We were checking in at the desk, and the clerk pulled up our reservation for a handicapped room from her file. Speaking to my partner, she said:
"Here it is... you're the non-smoking handicapped queen."
I positively choked, and ran from the desk and around the corner, down a service hall that had the vending machines. I left my poor partner alone.
When I had composed myself I returned, just as the clerk noticed his rainbow ring.
"What a lovely birthstone ring! You have 6 children, and all born on different months!"
I ran away again, total coward, leaving him there, doubling over in laughter. When I returned a second time the clerk noticed my own ring, and happily exclaimed:
"And you have 6 children, too!" I completely lost it, and this time ran out the front entrance to where our car was parked, calling over my shoulder I was getting our luggage.
Here are 2 men, sharing a handicapped room with only 1 queen-sized bed in it. Our last names aren't the same, we ain't brothers. We have identical matching rings on the fourth finger of our left hands. And this naive women thinks we're married to women and each have at least 6 children, all born on the very same months.
We laughed about it all night, and it was one of our favorite stories for years.