Tomb of the Unknown Soldier, War memorial in Bucharest, Romania

The Tomb of the Unknown Soldier is a stone monument in Carol Park, Bucharest, designed by sculptor Emil Wilhelm Becker and inaugurated in 1923. It stands on the esplanade in front of the Memorial of the Nation's Heroes, near the former Communist mausoleum. The memorial marks the burial place of one unidentified Romanian soldier from World War I.

Ten unidentified soldiers from the fronts at Mărășești, Mărăști, Oituz, Târgu Ocna, Jiu, Prahova, Bucharest, Dobruja, Transylvania and Bessarabia were exhumed and placed in oak coffins lined with zinc in the Mărășești church. On 14 May 1923, 12-year-old war orphan Amilcar Săndulescu knelt before the fourth coffin and said, "This is my father." The chosen coffin was taken by train to Bucharest and buried in Carol Park on 17 May 1923, Ascension Day.

The tomb was inaugurated on 17 May 1923, which was also Heroes' Day (Ascension Day), and the date has since been used for commemorations. The stone slab of the original crypt read: "Here lies at rest happily unto the Lord the Unknown Soldier, who sacrificed his life for the unity of the Romanian people. On his bones lies the land of united Romania. 1916–1919."

The tomb stands on the esplanade in front of the Memorial of the Nation's Heroes in Carol Park, next to the former Communist mausoleum. It was returned to this spot, close to its 1923 position, in 2006. The monument is a classified historic monument (LMI code B-IV-m-A-20105). Look for the stone slab inscription mentioning the years 1916–1919.

On 6 June 1923 the United States War Department announced that its Medal of Honor would be awarded to the Romanian Unknown Soldier. It was one of only five such medals given to Unknown Soldiers of allied nations after World War I.