Nonwoven fabric, filter, and manufacturing method for nonwoven fabric

This nonwoven fabric includes thermoplastic resin fibers that have an average fiber diameter of 5μm or less and have an accumulated frequency of fibers of 100nm to 200nm diameter of 3.0% or greater. This manufacturing method for a nonwoven fabric includes melting a thermoplastic resin composition that includes a thermoplastic resin and has a melt viscosity of 0.1Pa∙s to 100.0Pa∙s at 200°C, intermittently dripping the result from a spinning nozzle in 10 -9 m 3 to 10 -4 m 3 molten resin clumps, supplying a gas to the dripped molten resin clumps and forming thermoplastic resin fibers, and accumulating the formed thermoplastic resin fibers.