Examples relate to fluid collection devices, and related systems and methods. In some embodiments, a fluid collection device includes a fluid impermeable barrier and a fluid permeable body. The fluid impermeable barrier may include a first end region, a second end region, a front side, and a back side. The fluid impermeable barrier defines an opening on the front side, one or more apertures on the back side distal to the opening and positioned between the first end region and the second end region, and a chamber within the fluid collection device. At least one of the first end region or the second end region may be substantially planar. The fluid permeable body is positioned within the chamber and extends across at least a portion of the opening.