- Time Period: Pre-WW1
- Institution: 29 December 1841
- Country: Luxembourg
The Order of the Oak Crown (or Ordre de la Couronne de chêne in French, Eichenlaubkronenorden in German) is a prestigious honor of the Grand Duchy of Luxembourg, established in 1841 by Grand Duke William II, who was also King of the Netherlands.
Initially, the Order of the Oak Crown served as a Luxembourgish honor during the personal union between Luxembourg and the Netherlands, where both nations shared the same head of state. Despite its legal status as a Luxembourgish order, it was frequently used by William II (who conferred the order to fewer than 30 recipients) and his successor, William III (bestowing 300 decorations), to reward Dutch subjects independently of the Dutch government.
The order consists of five grades:
Grand Cross 
Grand Officer 
Commander 
Officer 
Knight
The Order of the Oak Crown Design
The badge of the Order (depicted here) features a gilt cross pattée enameled in white, with the Officer class distinguished by a green enameled oak wreath between the arms of the cross. The central disc showcases a crowned monogram “W” (for William) on a green enamel background.
The plaque for the Order varies by rank: for the Grand Cross, it is an eight-pointed faceted silver star; for the Grand Officer, it is a faceted silver Maltese Cross. Both plaques have a central disc with the crowned monogram “W” on a green enamel background, encircled by a red enamel ring bearing the motto “Je Maintiendrai” (“I Will Maintain”), which is the national motto of the Netherlands, and further surrounded by a green enamelled oak wreath.
The medal of the Order is octagonal, featuring the badge motif without enamel on the obverse and an oak wreath without enamel on the reverse.
The ribbon is yellow-orange moiré with three dark green stripes, symbolizing the oak forests and rue fields of the Luxembourg countryside.
