Hypericum sinaicum is a perennial herb in the genus Hypericum, in the section Adenosepalum.
The species grows to be 0.1-0.35 meters tall. Its stems are generally green but often have a reddish hue. Its petals are a pale yellow and can have faint red veins. Its seeds are a dark reddish brown. H. sinaicum is very similar in appearance to Hypericum collenetteae.
Hypericum sincaicum is found in the Sinai Peninsula, Northern Saudi Arabia, and parts of Jordan.