Immediately after his graduation he applied to a competition in The National Theater He ranked first in 3 consecutive qualifiers, but the decision to appoint him did not happen, despite that, he kept chasing his dream and refused a government job in Port Said at the time.
However, the year 1968 was a watershed in Yassin’s life, when he was appointed to the National Theater, to begin his journey in the championship through the play “The Dream” written by Muhammad Salem and directed by Abd al-Rahim al-Zarqani.
After this play, his real journey began on the stage of the National Theater, which presented more than 20 plays, most notably Al-Zeer Salem, Layla, Majnun, Khedive and Suleiman al-Halabi.
Either in CinemaYassin hesitated to enter this world at the beginning of his artistic life, and he did not pay any attention to this art influencing people, and from here his participation in it was limited to shy roles.
But this hesitation did not last for long, until he had the opportunity to first star in the movie “We Do Not Sow Thorns” with Shadia, then his cinematic works continued, bringing his balance to more than 150 films during which he won the title of “The First Screen Boy”. One of his most recent films is “Al Jazeera” with Ahmed El Sakka The bullet is still in my pocket, the most famous of the October 1973 war films.
On television, Yassin presented dozens of series, most notably, The Eddy and Tomorrow Flowers Blooming, The Diaries of a Husband, The Second Meeting, the Girls’ Brother, Against the Current, The East Wind, and Abu Hanifa al-Nu`man.
Yassin has won a large number of awards and accolades, most notably the award for best actor in Television Festival For two consecutive years 2001 and 2002.
Mahmoud Yassin was chosen in 2005 by the United Nations as a Goodwill Ambassador to combat poverty and hunger for his various humanitarian activities.