Lotrioara
{{for|the village in Sibiu County|Boița}}
{{Infobox river
| name = Lotrioara
| native_name =
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| image = Harta bazinului hidrografic al raului Lotrioara, afluent al Oltului.jpg
| image_size =
| image_caption = Lotrioara drainage basin
| pushpin_map = Romania
| subdivision_type1 = Country
| subdivision_name1 = Romania
| subdivision_type2 = Counties
| subdivision_name2 = Sibiu
| length = {{convert|25|km|abbr=on}}
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| source1 = Lotru Mountains
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| mouth = Olt
| mouth_location =
| mouth_coordinates = {{coord|45.5619|24.2609|display=inline,title}}
| mouth_elevation =
| progression = {{ROlt}}
| river_system =
| basin_size = {{convert|120|km2|abbr=on}}
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The Lotrioara (in its uppermost course also: Sterpu and Voinegel) is a right tributary of the river Olt in Romania.{{GeoSource|RO|Annex7|699}}{{GeoSource|RO|Atlas|291-292|VIII.1.124}} It originates in the Lotru Mountains. The Lotrioara discharges into the Olt in Lazaret.[http://www.e-calauza.ro/index.php?afiseaza=pluta_noua&rau=162 Lotrioara (jud. Sibiu)], e-calauza.ro Its length is {{convert|25|km|abbr=on}} and its basin size is {{convert|120|km2|abbr=on}}.{{GeoSource|RO|Atlas|291-292|VIII.1.124}}
Tributaries
The following rivers are tributaries to the river Lotrioara (from source to mouth):
- Left: Brăneasa, Pârâul Cailor, Mohan, Valea Rea, Sasul, Mogoș
- Right: Voineag, Pârâul Afinelor, Pologașu, Sfârcaș, Gârcu, Frasinu, Izvorul Tomnatecului, Izvorul Mielului, Tisa, Valea Neagră, Prejba, Pitulușul, Podragul, Mătrăguna