Þórður is a given name. Notable people with the name include:
Þórður Friðjónsson (Thordur Fridjonsson), Vice President of Iceland Stock Exchange and President of NASDAQ OMX Iceland
Þórður Guðjónsson, (Thordur Gudjonsson), (born 1973), retired Icelandic footballer
Þórður kakali Sighvatsson (died 1256), 13th century Icelandic chieftain who fought in the Icelandic civil war