Johanna Maria Henrica (Anneke) Levelt Sengers (born 4 March 1929) is a Dutch physicist known for her work on critical states of fluids. She retired from the National Institute of Standards and Technology (NIST) in 1994, after a 31 year career there. In 2005 Levelt Sengers was co-chair (with Dr Manju Sharma) for the InterAcademy Council of the advisory report 'Women for Science' published June 2006. She currently co-chairs the InterAmerican Network of Academies of Sciences women for science program.