| Viestards | |
|---|---|
| Duke of Semigallia | |
.jpg) Painting of Viestards by Ludolfs Liberts in Riga Castle, 1936 | |
| Reign | until 1230 |
| Born | 12th century |
| Died | 1230 |
Viestards (also Viesthard, Vesthardus, Viesturs; died 1230) was one of the greatest Semigallian dukes in the 13th century, referred to as King Vester (Old High German: konic Vesters).