Syed Waliullah (Bengali: সৈয়দ ওয়ালিউল্লাহ; August 15, 1922 – October 10, 1971) was a Bangladeshi novelist, short-story writer, and playwright. He is noted for his first novel Lalsalu, which has been translated in English as Tree Without Roots. He received Bangla Academy Literary Award in 1961 for his contribution in novel; and was awarded Ekushey Padak in 1984 and Bangladesh National Film Awards for best story in 2001, both by Government of Bangladesh, posthumously.