Abstract: A support collar (1) for long articles (10), in particular cables, pipes and/or the like, comprises a sheet-like structure (2) provided with: a flat top end portion (4), having an opening (5); two side portions (6) perpendicular to the top end portion (4) and each having a respective engaging element (7) for engaging the support collar (1) on a support plate (8) or on a top end portion (4) of another support collar (1). The side portions (6) and the top end portion (4) delimit an area (9) for partially housing an article (10) to be supported. The collar (1) also comprises retaining means (11) for keeping the long article (10) stably joined to the sheet-like structure (2). The retaining means (11) comprise at least one retaining clip (12) provided with two gripping arms (13) which extend inside the housing area (9). The gripping arms (13) can be elastically splayed so as to engage with the long article (10) and retain the latter inside the housing area (9).