Not necessarily. In California, the default rule is one director per shareholder, and if there are more than 3 shareholders, then 3 minimum. You can always have more directors than is required by law, and you can even contract to have fewer than is required, so long as the shareholders agree to that.
Does my corporation have to have more than one director?
About the Author: David Herzog
Since 1993, I have represented hundreds of businesses and individuals in a variety of industries. Small business legal advising . . . that's my thing.