An investigation has been conducted to find the approximate variation of the drag coefficient with Reynolds number of several cylinders having different cross-sectional shapes. Data were obtained for circular cylinders, elliptical cylinders of two fineness ratios, rectangular and diamond cylinders of three fineness ratios, and two isosceles triangular cylinders (apex forward and base forward). Three different corner radii were tested on each of the shapes, except for the circular and elliptical cylinders. Data were obtained for Reynolds numbers as low as ll,000 and as high as 2,300,000. For some cylinders, frequencies of pressure fluctuations in the wake were measured for a limited range of Reynolds numbers.