The　potential　application　of　tuned　liquid　column　damper　(TLCD)　for　suppressing　wind-induced　vibration　of　long　span　bridges　is　explored　in　this　paper.　By　installing　the　TLCD　in　the　bridge　deck,　a　mathematical　model　for　the　bridge-TLCD　system　is　established.　The　governing　equations　of　the　system　are　developed　by　considering　all　three　displacement　components　of　the　deck　in　vertical,　lateral,　and　torsional　vibrations,　in　which　the　interactions　between　the　bridge　deck,　the　TLCD,　the　aeroelastic　forces,　and　the　aerodynamic　forces　are　fully　reflected.　Both　buffeting　and　flutter　analyses　are　carried　out.　The　buffeting　analysis　is　performed　through　random　vibration　approach,　and　a　critical　flutter　condition　is　identified　from　flutter　analysis.　A　numerical　example　is　presented　to　demonstrate　the　control　effectiveness　of　the　damper　and　it　is　shown　that　the　TLCD　can　be　an　effective　device　for　suppressing　wind-induced　vibration　of　long　span　bridges,　either　for　reducing　the　buffeting　response　or　increasing　the　critical　flutter　wind　velocity　of　the　bridge.