Hypopterygium is a genus of moss in the family Hypopterygiaceae. It contains the following species:

• Hypopterygium arbuscula Brid.
• Hypopterygium arcuatum (Hedw.) Müll. Hal.
• Hypopterygium balantii (Kindb.) Müll. Hal. ex Loeske
• Hypopterygium ciliatum (Hedw.) Brid.
• Hypopterygium concinnum (Hook.) Brid.
• Hypopterygium convolutaceum Müll. Hal.
• Hypopterygium didictyon Müll. Hal.
• Hypopterygium discolor Mitt.
• Hypopterygium elatum Tixier
• Hypopterygium filiculaeforme (Hedw.) Brid.
• Hypopterygium flavolimbatum Müll. Hal.
• Hypopterygium hildebrandtii (Kindb.) Müll. Hal. ex Paris
• Hypopterygium hookerianum (Griff.) A.J. Shaw, I. Holz, C. J. Cox & Goffinet
• Hypopterygium javanicum (Hampe) A. Jaeger
• Hypopterygium lutescens Hornsch.
• Hypopterygium pallens (Hook. f. & Wilson) Mitt.
• Hypopterygium parvifolium (Bosch & Sande Lac.) A.J. Shaw, I. Holz, C. J. Cox & Goffinet
• Hypopterygium pinnatum (Hampe) A. Jaeger
• Hypopterygium rotulatum (Hedw.) Brid.
• Hypopterygium sandwicense Broth.
• Hypopterygium spectabile (Reinw. & Hornsch.) Müll. Hal.
• Hypopterygium struthiopteris (Brid.) Brid.
• Hypopterygium tamarisci (Sw.) Brid. ex Müll. Hal.
• Hypopterygium tamariscinum (Hedw.) Brid.
• Hypopterygium thouinii (Schwägr.) Mont.
• Hypopterygium tomentosum (Hedw.) Müll. Hal.
• Hypopterygium viridulum Mitt.
• Hypopterygium vriesei Bosch & Sande Lac.

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