Not exactly barbecue, but eating meat cooked on coals somewhere outside is pretty popular in my corner of eastern europe.

If by barbecue you mean grilling, it's very popular in the summer up here in Norway. If you mean actual barbecue, then not so much - It takes too long. The only one I know here who does actual barbecue here is a Texan immigrant.

Poland: fairly popular both as means of preparing food and as a social event. If it is a social event they are much smaller than in the US or Canada on average.

Depends what your definition of common is, I live in Amsterdam and I'd say in summer people BBQ like once a month, depending on if you have space etc.

In summer I'd sometimes have a Braai (South African style BBQ) multiple times a week, it's a big part of my culture. But on average like once a week 🤷‍♂️

Back home in South Africa some people braai multiple times a week on average

Quite.

South of France.

can we bring up the assumption that BBQ is an "American thing"?

cooking stuff on a fire outside is the most ancient and universal form of cooking.

yhea, different places have their own variations, but asking a question like "do [non Americans] do [something universal]" is painfully stupid.

Very Cyprus