* Switzerland: While German is the most spoken language, French, Italian, and Romansh are all official languages of Switzerland.
* Belgium: While the official languages are Dutch, French, and German, Italian is also spoken by a smaller community.
It's also worth noting that while French is the official language of Luxembourg, German is also widely spoken there.
So, while there's no one country where all three languages are officially spoken, you'll find these languages spoken in pockets and communities across various European countries.