Yes, you can!
Citizens of most European countries (Austria, Belgium, Greece, Denmark, Estonia, Italy, Republic of Ireland, Cyprus , Lithuania, Estonia, Luxembourg, Malta, Hungary, Germany, Poland, Portugal, Slovakia, Slovenia, Finland, France, Netherland, Czechoslovakia, Spain, Sweden, United Kingdom, Bosnia, Croatia, Russia, Ukraine) do not need visas to enter Montenegro and can stay in the country for up to 90 days.
Foreign citizens coming from other destinations are able to check at:
http://www.mvpei.gov.me/en/sections/consular-affairs/visa-regimes-for-foreign-citizens/
