Physics of Fluids is a monthly peer-reviewed scientific journal covering fluid dynamics, established by the American Institute of Physics in 1958, and is published by AIP Publishing.

The journal focus is the dynamics of gases, liquids, and complex or multiphase fluids—and the journal contains original research resulting from theoretical, computational, and experimental studies.

The journal was originally published by the American Institute of Physics in cooperation with the American Physical Society's Division of Fluid Dynamics.

With funding from the American Institute of Physics the annual "François Naftali Frenkiel Award" was established by the American Physical Society in 1984 to reward a young scientist who published a paper containing significant contributions to fluid dynamics during the previous year.

Similarly, the invited papers from plenary talks at the annual American Physical Society Division of Fluid Dynamics were formerly published in Physics of Fluids but, since 2016, are now published in either this journal[2][3] or Physical Review Fluids.