Stephanodiscaceae is a family of diatoms belonging to the order Stephanodiscales.

Genera include:

• Brevisira Krammer
• Concentrodiscus G.C.Khursevich, A.I.Moisseeva & G.A.Sukhova
• Crateriportula Flower & Håkansson
• Cribrionella Jovanovska, Cvetkoska, Tofilovska, Ognjanova-Rumenova & Levkov
• Cyclocostis Paillès
• Cyclostephanopsis Loginova
• Cyclostephanos Round
• Cyclotella (Kützing) Brébisson
• Cyclotubicoalitus Stoermer, E.F.Kociolek & W.Cody
• Dimidialimbus H.Tanaka & T.Nagumo
• Discotella V.Houk & R.Klee
• Edtheriotia Kociolek, Q.M.You, Stepanek, R.L.Lowe et Q-X. Wang

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