@mocke2003 If your husband holds a valid Schengen visa (or a valid EU residence permit, a valid visa of the United States of America, United Kingdom, Northern Ireland, Republic of Ireland, Japan, Australia, New Zealand, Bulgaria, Romania), you may enter and stay, i.e. pass through the territory of Montenegro up to 30 days, and not longer than the expiry of visa, if the period of validity of the visa is less than thirty days. Unless his visa is already expired or you need more than 30days of stay inside Montenegro, there is no need to get a separate visa.