Methods, apparatus, systems, and articles of manufacture are disclosed for socket interconnect structures and related methods. An example socket interconnect apparatus includes a housing defining a plurality of first openings and a plurality of second openings and a ground structure coupled to the housing. The ground structure defines a plurality of third openings. The third openings of the ground structure align with the second openings of the housing when the ground structure is coupled to the housing. A plurality of ground pins are located in respective ones of the second openings and third openings. The ground structure is to electrically couple the ground pins. A plurality of signal pins are located in respective ones of the first openings of the housing. The signal pins are electrically isolated from the ground structure.