ECCC is an abbreviation for:

  • Eastern Collegiate Cycling Conference, an American Cycling Federation
  • Electronic Colloquium on Computational Complexity, a journal of theoretical computer science
  • Essex County Cricket Club, a cricket club from Essex
  • Euro Hockey Club Champions Cup, various hockey competitions
  • European Club Crew Championships, a dragon boat competition
  • European Club Cup of Champions, a former table tennis competition, see European Cup (table tennis)
  • European Continuous Casting Conference, a scientific conference on topics of metallurgy
  • European Creep Collaborative Committee, a body promoting materials science
  • Extraordinary Chambers in the Courts of Cambodia, see Khmer Rouge Tribunal
  • Disambiguation
  • Abbreviation