Herdmania is a genus of ascidian tunicates in the family Pyuridae. Species within the genus Herdmania include: * Herdmania armata Monniot & Monniot, 2001 * Herdmania colona Monniot & Monniot, 2003 * Herdmania coutieri Monniot, 2002 * Herdmania fimbriae Kott, 2002 * Herdmania grandis (Heller, 1878) * Herdmania inflata (Van Name, 1918) * Herdmania insolita Monniot & Monniot, 2001 * Herdmania japonica (Hartmeyer, 1909) * Herdmania kiiensis Nishikawa, 2002 * Herdmania mauritiana (Drasche, 1884) * Herdmania mentula Kott, 2002 * Herdmania mirabilis (Drasche, 1884) * Herdmania momus (Savigny, 1816) * Herdmania pallida (Heller, 1878) * Herdmania pennata (Monniot & Monniot, 1991) * Herdmania polyducta (Monniot & Monniot, 1989) * Herdmania subpallida