大眼海豹（学名：Ommatophoca rossii），是分布于南极大陆附近海域的一种海豹，因眼睛比较大（眼径达7厘米），故名，又因英国南极探险家詹姆斯·克拉克·罗斯于1841年首次描述，故又称罗氏海豹、罗斯海豹。

大眼海豹头部较宽，吻较短，触须长仅10～40毫米。颈部短粗，头能缩进去。身体表面光滑，背部褐灰色或黑色，腹部银白色。成年雄性大眼海豹体长1.68～2.08米，重129～216公斤；雌性1.96～2.36米，重195～204公斤。以头足类、磷虾和鱼为食。一般独栖，喜栖于冰丛上，能发鸟叫似的声音。

The Ross seal (Ommatophoca rossii) is a true seal (family Phocidae) with a range confined entirely to the pack ice of Antarctica. It is the only species of the genus Ommatophoca. First described during James Clark Ross' British Antarctic Expedition in 1841, it is the smallest, least abundant and least well known of the Antarctic pinnipeds. Its distinctive features include disproportionately large eyes, whence its scientific name (Ommato- meaning "eye", and phoca meaning "seal"), and complex, trilling and siren-like vocalizations.