It depends on several things:Do your businesses relate to each other under a theme like weddings, food, etc.?Are they in the same area or building?If you can answer yes, I would consider doing it, but it is not a definite yes. Consider how professional it would look to have more than one business on the cards. Remember to consider how you want to be perceived by customers. I would personally make the decision to make separate business cards for each business.
I would be highly suspicious of seeing anybodies name on different business cards