Çelebi (Turkish pronunciation: [tʃeleˈbi], Ottoman Turkish: چلبی) was an Ottoman title of respect, approximately corresponding to "gentleman", "well-mannered" or "courteous". Çelebi also means "man of God", as an i-suffixed derivative from çalab (Turkish pronunciation: [tʃaˈɫap]), which means "God" in Ottoman Turkish. German linguist and Turkologist Marcel Erdal, citing Baron Tiesenhausen, traces çalab back to Arabic djellaba "importer, trader, merchant" > "high social positions"; jallāb is derived from root j-l-b "to have brought, to import", ultimately from West Semitic root g-l-b "to catch, to fetch".

Notable people with the title include, in approximate chronological order:

Çelebi is a family of descendants of Rumi (13th-century Persian poet and Sufi mystic), who established and led the Sufi Mevlevi Order ("the whirling dervishes") for over 700 years