A magnetic grounding clamp for portable yet secure connection of a welder grounding lead to any grounding body including irregular-shaped objects such as pipes and metal cylinders. The grounding electrode generally comprises conductive body having a protruding elongate neck, opposing-protruding legs, and a pivoting foot assembly having a disk-like magnet attached distally at the end of each leg. A length-adjustable tungsten grounding electrode protrudes downward from the end of the elongate neck. The body has a tail section with an adjustable spacer protruding therefrom. The spacer see-saws the body about the foot assemblies to maintain the grounding electrode in direct contact with whatever earth structure the cupped magnets are affixed to, thereby ensuring a firm ground contact and reliable ground path for the welder grounding lead.