Carbon　fibre-reinforced　polymer　(CFRP)　straps　can　be　utilised　as　tension　members　in　structures　on　account　of　their　high-strength　properties.　The　development　of　an　effective　anchorage　device　for　CFRP　straps　that　can　fully　utilise　the　strength　of　straps　before　anchorage　failure　is　an　ongoing　technical　challenge.　To　address　such　knowledge　gap,　a　novel　anchorage　device　termed　winding-wedge　anchorage　that　combines　winding　and　wedge　anchorage　mechanisms　is　reported　herein.　For　the　winding　anchorage　component,　different　numbers　of　winding　turns　are　applied.　For　the　wedge　anchorage　component,　three　different　types　of　wedge　anchorage　systems　are　investigated　namely　bonding,　friction　clamping,　and　friction　non-clamping.　Initially,　the　working　mechanism,　theoretical　winding–wedge　anchorage　model　(herein　theoretical　model),　and　design　parameters　are　determined.　Experimental　and　finite　element　analyses　are　then　reported　to　assess　the　behaviour　of　the　anchorage　including　failure　modes　and　anchorage　efficiencies.　The　accuracy　of　the　theoretical　model　is　also　reported.　It　is　concluded　that　the　efficiency　of　the　anchorage　device　is　primarily　dependent　on　the　wedge　anchorage　component.　Moreover,　the　bonding　wedge　anchorage　component　performed　better　than　the　other　two　wedge　anchorage　systems.　The　theoretical　model　and　experimental　results　revealed　that　1.5　winding　turns　results　in　an　optimal　interaction　between　the　winding　and　wedge　anchorages　components.　©　2023　The　Authors