Plexippus clemens is a species of jumping spider in the genus Plexippus that has a wide species distribution and has been found in countries around the Mediterranean Sea and across Asia as far as China. The spider is small between 3.46 and 5.2 mm (0.136 and 0.205 in) in total length, the female being larger than the male. The female is generally yellow, with a black eye field and yellow-brown stripes and chevrons marking its abdomen. The male is darker, generally blackish-brown on top with a broad yellowish-white line down the back of its abdomen. The male has thick hairs on its clypeus. The spider's copulatory organs are similar in general layout to other spiders in the genus, particularly the internal structure of the female. The epigyne has a depression towards the front and slits that contain the copulatory openings. The male has a relatively short and thick embolus.

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