Morocco is considered to be a nation-state, because of the combination of religion, nationalism, and the monarchy's hereditary rule under the country's official slogan "God, the nation, the king." 

There is a autonomous region in Morocco known as the Western Sahara. However, it's a disputed territory and it's status on its autonomy undergoes international disputes and conflicts.  

One notable stateless nation in Morocco are the Sahrawi people that are part of the Western Sahara. The Western Sahara is known to be a disputed territory claim which is why the Sahrawi people are considered to be a stateless nation. 

There aren't any multi-state nations in Morocco.