Memorial Ossuary Cer, Military memorial in Tekeriš, Serbia.

Memorial Ossuary Cer is a memorial complex in Tekeriš whose central monument is a roughly worked stone pyramid about 10 m high, meant to evoke Mount Cer. At its top is a bronze eagle with outstretched wings holding a laurel wreath; the flattened west face bears the Serbian coat of arms, the date 18 August 1914 and the inscription "Your works are immortal". The ossuary itself lies buried beneath the monument, and the complex also includes a chapel, a memorial fountain and an exhibition pavilion.

The memorial was built in 1928 to honor the Battle of Cer in August 1914, when Serbian forces defeated the Austro-Hungarian army. This victory was one of the first major allied successes against the Central Powers during World War I.

The site brings together Serbian and Czech history in a single memorial space, as soldiers from both nations rest here together. Visitors from different countries come to pay respects and remember those who fell.

The monument stands in the centre of Tekeriš, on the slopes of Mount Cer. Steps on both sides of the rock lead from the plateau in front of the memorial plaques up to the monument itself. The former chapel north of the ossuary houses a museum exhibition on the Battle of Cer.

The ossuary contains remains from soldiers of two different nations, including 2,230 Serbs and 812 Czechs. Among the Serbian remains, 128 names have been identified and preserved.