Relevant for the standards and conventions in geodesy and related disciplines are the resolutions, which have been adopted by the Councils of

• the International Union of Geodesy and Geophysics (IUGG)

• the International Association of Geodesy (IAG)

• the International Astronomical Union (IAU)

These resolutions are regularly published by IUGG and IAU and in the IAG Geodesist’s Handbook:
Drewes H., Hornik H., Adam J., Rozsa Sz.: The Geodesist`s Handbook 2012. Journal of Geodesy, 86(10): 789-974, Springer, DOI:10.1007/s00190-012-0584-1, 2012

Other entities involved in standards and conventions are, e.g.,

• the International Bureau for Weights and Measures (BIPM)

• the Committee on Data for Science and Technology (CODATA)

• the International Organization for Standardization (ISO)

• the National Institute of Standards and Technology (NIST)

• the Open Geospatial Consortium (OGC)

• the Technical Committee ISO/TC211