Clement Rudolph "Clem" Simich or Šimić is a New Zealand politician for the National Party.

The Tamaki by-election 1992 was a by-election held in the Tāmaki electorate during the 43rd New Zealand Parliament, on 15 February 1992. It was caused by the resignation of incumbent MP Sir Robert Muldoon and was won by Clem Simich with a majority of 1,252. The by-election was also notable as the first contested by the recently formed Alliance Party, and for their success in coming second ahead of the Labour Party.