The main goal of this article is to examine whether shocks had a permanent or temporary effect on international tourist arrivals in Morocco for its top 8 source countries. For this purpose, we apply the linearity test and the linear and nonlinear unit root tests. The results show that the series with linear characteristics are tourist arrivals from the UK and US and those with nonlinear characteristics are tourist arrivals from Belgium, France, Spain, Italy, Netherlands, and Germany. The unit root tests reject the null hypothesis of a nonstationarity in tourist arrivals from all countries except Germany. The implication of these findings is that the shocks had a temporary effect on tourism arrivals from seven markets to Morocco. Therefore, Morocco's tourism sector is a sustainable industry as external shocks have not had long-term disruption in the flow of tourist arrivals.