A bidirectional, wedge clamp is disclosed. Conventional clamps, such as those used with electrical cables mainly secure a line in a single direction. The invention herein being comprised of a bidirectional clamp for conventional cables, wires and rope etc. (herein referred to as a ‘line’) having a simple and easily-operable construction, wherein two plate-like members and an outer sleeve-like member are telescopically assembled to clamp a line there between. Plates and sleeve members having a plurality of interconnected, opposing number of wedges that when acted upon in a lateral motion by a line there between, causing said wedges to slide against one another—thereby tightening down the plates onto said line and preventing slippage. An object of the invention is to clamp a line and prevent slipping laterally in either direction along the line's longitudinal axis.