A line hanger for securing lines, such as transmission, pneumatic, hydraulic, electrical and other types of lines, to a support structure. The line hanger includes a wire structure with an attachment section configured for mounting to the support structure and a pair of clamping arms depending outwardly from the attachment provision. The clamping arms are configured to resiliently separate to receive a line and to resiliently relax for applying a clamping force to secure the line. The clamping arms are clasped together by engaging hook members defined at the open end of the wire structure. Multiple line hangers may be interlinked or stacked relative to the support structure for support multiple lines.