El-Hadji Malick Sy was a Senegalese spiritual guide and instructor who belonged to the Malikite and Ash'arite brotherhood of Tijaniyya Sufis. He lived from 1853 until 1922.

El-Hadji Malick Sy, a religious student who was born in Gaya, northern Senegal, to a Fulani family, first migrated to Mauritania and then to Saint-Louis, Senegal in 1884. He visited Mecca, then came back to teach at Louga and Pire [fr] before founding a zwiya (religious center) at Tivaouane. He moved permanently to the city in 1898 and established the tivaouane zwiya in 1902 after receiving advice from his father-in-law Mor Massamba Diery Dieng, the father of his wife Sokhna Yacine Dieng, and at the invitation of the local leader Dj

• The Grand Mosque of Tivaouane ( El Hadji Malick Sy Mosque)