Yes! The manufacturer claims that this product is lactose free.

Is Frontier Co-op Organic Vanilla Flavoring, Non-Alcoholic, 2 fl oz (59 ml) Lactose Free?

Yes! The manufacturer claims that this product is lactose free.
Lactose Free? Frontier Co-op Organic Vanilla Flavoring, Non-Alcoholic, 2 fl oz (59 ml) | Spoonful