Can a husband sue his separated wife?

The action in which people request that a court dissolve the marriage is a suit for divorce. Both the wife and the husband have the right to sue. Typically, the other party will respond to the suit with a counterclaim for divorce.

With the advent of "no fault" divorce, it is often unnecessary to prove fault grounds or reasons for divorce. Instead, the dispute typically centers around the division of property, custody and support.

Added: Simple answer - yes.