Sometimes—often, yes. Most bean-to-bar dark chocolate is naturally vegan: just cacao mass and sugar (sometimes it contains some added cocoa butter, which is a plant-based product, not an animal-based one!). But milk, white, and some flavoured bars aren’t. Always check the ingredients.
However, you don't have to give up on milk chocolate even if you follow the vegan diet. Did you know there are vegan milk chocolate bars that use nut milk, for instance? Bean-to-bar makers replace milk powder with things like oat, coconut, rice, or nut ingredients, like cashew, for instance.
If you'd like vegan chocolate with milk chocolate feel, try Kinako - Japanese dark chocolate with roasted soybean powder — a product commonly used in Japanese cuisine.
Paired with a pure cocoa taste that lingers, this dark chocolate with 55% cocoa content offers taste notes of nuts and caramel.
Kinako Chocolate - Japanese dark chocolate with roasted soybean powder
https://www.wix.app/stores/571db85b-6711-4e25-86f4-4ead225724b9/catalog/d51e1115-edba-23e4-124f-9f0a6f5a9b02?d=https://www.crmbl.nl/product-page/kinako-chocolate