Elections to the Zetland County Council were held on 8 May 1973 as part of Scottish local elections. This was the last election for the County Council before its incorporation along with the Lerwick Town Council into the Shetland Islands Council in 1975. Elections were held in every part of Shetland except Lerwick to elect 24 landward members to the County Council, who would be joined by six nominated members from the Lerwick Town Council.