The　present　paper　provides　test　data　to　evaluate　the　seismic　performance　of　recycled　aggregate　concrete　(RAC)　filled　steel　square　hollow　section　(SHS)　beam-columns.　Fifteen　specimens,　including　12　RAC　filled　steel　tubular　(RACFST)　columns　and　3　reference　conventional　concrete　filled　steel　tubular　(CFST)　columns,　were　tested　under　reversed　cyclic　flexural　loading　while　subjected　to　constant　axially　compressive　load.　The　test　parameters　include:　(1)　axial　load　level　(n),　from　0.05　to　0.47;　and　(2)　recycled　coarse　aggregate　replacement　ratio　(r),　from　0　to　50%.　It　was　found　that,　generally,　the　seismic　performance　of　RACFST　columns　was　similar　to　that　of　the　reference　conventional　CFST　columns,　and　RACFST　columns　exhibited　high　levels　of　bearing　capacity　and　ductility.　Comparisons　are　made　with　predicted　RACFST　beam-column　bearing　capacities　and　flexural　stiffness　using　current　design　codes.　A　theoretical　model　for　conventional　CFST　beam-columns　is　employed　in　this　paper　for　square　RACFST　beam-columns.　The　predicted　load　versus　deformation　hysteretic　curves　are　found　to　exhibit　satisfactory　agreement　with　test　results.