This　paper　investigates　the　fire　performance　of　concrete-filled　steel　tubular　(CFST)　triple-limb　laced　columns.　Six　CFST　triple-limb　laced　columns　are　tested　to　measure　their　fire　resistance.　The　influence　of　column　load　ratio　and　steel　type　on　fire　resistance　are　investigated.　For　comparison,　four　CFST　single-limb　columns　in　fire　are　tested.　The　test　results　indicate　that　the　three　CFST　chords　in　CFST　triple-limb　laced　columns　can　work　together　very　well　in　fire　because　of　the　binding　effect　provided　by　the　steel　lacing　tubes.　Finite-element　analysis　(FEA)　models　are　developed　to　simulate　the　CFST　triple-limb　laced　columns　in　fire.　The　mechanical　behavior,　including　failure　modes,　deformation,　and　load　distribution,　are　discussed.　Parametric　analysis　based　on　the　established　FEA　model　is　conducted,　and　a　simplified　equation　is　proposed　to　predict　the　fire　resistance　of　CFST　triple-limb　laced　columns.