[[[Nigerian Chieftaincy|Chief]] Chimamanda Ngozi Adichie (/ˌtʃɪməˈmɑːndə əŋˈɡoʊzi əˈdiːtʃi.eɪ/ ^ⓘ CHI-mə-MAHN-də əng-GOH-zee ə-DEE-chee-ay; born 15 September 1977) is a Nigerian writer whose works include novels, short stories and nonfiction. She was described in The Times Literary Supplement as "the most prominent" of a "procession of critically acclaimed young anglophone authors" of Nigerian fiction who are attracting a wider audience, particularly in her second home, the United States.

Adichie has written several novels, among them Purple Hibiscus (2003), Half of a Yellow Sun (2006), and Americanah (2013), short stories, the book-length essays We Should All Be Feminists (2014) and Dear Ijeawele, or A Feminist Manifesto in Fifteen Suggestions (2017), and a memoir, Notes on Grief (2021).

In 2008, she was awarded a MacArthur Genius Grant. In 2018, she was the recipient of the PEN Pinter Prize awarded by English PEN. She was recognized as one of the BBC's 100 women of 2021.