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Initiated  in  1984,  the  Committee  Earth  Observing Satellites’ Working Group on Calibration and Validation (CEOS WGCV)  pursues activities to coordinate, standardize and advance calibration and validation of civilian satellites and their data. One subgroup of CEOS WGCV, Land Product Validation (LPV), was established  in  2000  to  define  standard  validation  guidelines  and protocols and to foster data and information exchange relevant to the validation of land products. Since then, a number of leaf area index (LAI) products have become available to the science community at both global and regional extents. Having multiple global LAI products and multiple, disparate validation activities related to  these  products  presents  the  opportunity  to  realize  efficiency through international collaboration. So the LPV subgroup established  an  international  LAI  intercomparison  validation  activity. This  paper  describes  the  main  components  of  this  international validation effort. The paper documents the current participants, their ground LAI measurements and scaling techniques, and the metadata and infrastructure established to share data. The paper concludes  by  describing  plans  for  sharing  both  field  data  and high-resolution LAI products from each site. Many considerations of this global LAI intercomparison can apply to other products, and this paper presents a framework for such collaboration.