Аннотация:Radial velocities are measured for 40 individual, well-defined, extended moving filaments in the Cygnus Loop supernova remnant utilizing Fabry-Perot interferometer observations obtained in 1967-1968 with the 125 cm reflector of the Shternbeg Astronomical Institute Southern station in the Crimea (USSR). The radial velocities for the individual filaments are established as determined from the maximum point of the H-alpha line profile. It is determined that the H-alpha halfwidth for these filaments is 59 km/s. The radial velocities for the 40 moving filaments in the Cygnus Loop are found to have an average value close to zero, perhaps because these filaments lie chiefly on the outskirts of the supernova remnant.