Michael Sym or Syme (died 1577) was a Scottish goldsmith who worked for Regent Morton.
He was instructed to make an essay or masterpiece either in the workshop of John Mosman junior or George Heriot the elder.
Morton wanted some rubies cut or "tabled" in London, and he hoped Walsingham would send someone to help Sym discuss the commission with the craftsmen.
His stock in Edinburgh included precious stones, amethysts, turquoises, a little gold heart, enamelling colours, borax, and five crystal glasses probably for miniature cases.
His sister Katherine Sym (d. 1586) was married to another goldsmith, John Mosman junior.