两眼猪笼草是猪笼草科植物。

Nepenthes reinwardtiana

两眼猪笼草生长于南亚岛屿婆罗洲与苏门答腊（Sumatra）。

纳奎友丁猪笼草 Nepenthes naquiyuddinii

J·H·亚当（J. H. Adam）和哈米德（Hafiza A. Hamid）在2006年发现了纳奎友丁猪笼草（N. naquiyuddinii）。纳奎友丁猪笼草生长在沙巴（Sabah）和婆罗洲的Keningau-Kimanis Road和Trus Madi山脚下，海拔1400~1425m的开阔次生植被中。亚当和哈米德认为“因为两眼猪笼草和纳奎友丁猪笼草存在许多形态上的差异，所以他们不能归为同一个物种，但两眼猪笼草和纳奎友丁猪笼草仍有着近缘关系。”但是另一些学者认为，两眼猪笼草和纳奎友丁猪笼草的差异太小了，不足以讲其分成两个种。此外，这些学者认为纳奎友丁猪笼草可能是暗色猪笼草（N. fusca）和两眼猪笼草的自然杂交种。

Nepenthes reinwardtianavar. samarindaensisJ.H.Adam & Wilcock (1993)

以下是已被发现的两眼猪笼草的自然杂交种。N. albomarginata × N. reinwardtiana[=N. × ferrugineomarginata]

N. ampullaria × N. reinwardtiana

N. clipeata × N. reinwardtiana

N. fusca × N. reinwardtiana[=?N. naquiyuddinii]

N. gracilis × N. reinwardtiana

N. gymnamphora × N. reinwardtiana

N. hispida × N. reinwardtiana

N. macrovulgaris × N. reinwardtiana

N. mirabilis × N. reinwardtiana

N. reinwardtiana × N. spathulata

N. reinwardtiana × N. stenophylla

N. reinwardtiana × N. tentaculata [=?N. murudensis]

N. reinwardtiana × N. tobaica

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