Mehmed Said Pasha, also known as Küçük Said Pasha or Şapur Çelebi or in his youth as Mabeyn Başkatibi Said Bey, was an Ottoman monarchist, senator, statesman and editor of the Turkish newspaper Jerid-i-Havadis. He served as grand vizier for nine years in total, seven times during the reign of Abdul Hamid II and twice during the Second Constitutional Monarchy. He was known for his opposition to the extension of foreign influence in the Ottoman Empire. He was among the statesmen who were disliked by the Committee of Union and Progress (CUP). However in his last two grand vizierships, Said Pasha was supported by the CUP in the Chamber of Deputies, and his last grand vizierate ended in 1912 with a military memorandum against the Unionists.

The Second Constitutional Era was the period of restored parliamentary rule in the Ottoman Empire between the 1908 Young Turk Revolution and the 1920 dissolution of the General Assembly, during the empire's twilight years.