Heikki Häiväoja (born May 25, 1929 in Jämsä, Finland), is a Finnish sculptor and designer of the Finnish euro coins design for the minor and middle series of coins. All designs feature the 12 stars of the EU and the year of imprint on one side, and a national design on the other: The heraldic Finnish lion in a new version designed by the Heikki Häiväoja. 
- Brita Nickels (2006). Grave sculpture as interpreter of life and death. Grave sculptures done by Heikki Häiväoja, Kain Tapper and Matti Peltokangas 1952-2002 Archived 2007-06-21 at the Wayback Machine.. ISBN 952-10-3407-6. In Finnish.
- "Suomen kuvataiteilijat - HÄIVÄOJA HEIKKI Aulis - taiteellinen työ" (in Finnish). Kuvataiteilijamatrikkeli.fi. 2007-02-04. Archived from the original on 2011-07-22. Retrieved 2010-02-04.
- "Finnish National Gallery - Art Collections - Häiväoja, Heikki". Finnish National Gallery. Retrieved 2010-02-04.
- Finland 50 Cent coin described by the Bank of Finland, retrieved 7 December 2013.
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