Under 40 and non Commonwealth burials are at the bottom of the page

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​Ontario Cemetery

Orange Hill Cemetery

Orange Trench Cemetery

Orchard Dump Cemetery

​Orival Wood British Cemetery

Ors British Cemetery

Ors Communal Cemetery

​Oulchy-le-Château Churchyard Extension

Outtersteene Communal Cemetery Extension
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Ovillers Military Cemetery

Ovillers New Communal Cemetery

Owl Trench Cemetery

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​Obies Communal Cemetery

Ochey Churchyard

Odomez Communal Cemetery

Oignies Communal Cemetery

Oisemont Communal Cemetery

​Oissy Churchyard

​Omont Communal Cemetery
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Onnaing Communal Cemetery

​Orléans Main Cemetery

Orly-sur-Morin Communal Cemetery

Orsinval Communal Cemetery

Ostreville Churchyard

Outrebois Churchyard

Oise-Aisne American Cemetery