  The phenomenology and prospects for a discovery of R-parity violating
Supersymmetry at HERA are analysed. Emphasis is put on the direct resonant
production of squarks by electron-quark fusion and all possible subsequent
decay modes of the squarks are considered. In particular, the full consequences
of the mixing in the supersymmetric gaugino-higgsino sector are taken into
account. A rich phenomenology emerges for HERA which offers a unique
sensitivity to new R-parity violating couplings and good discriminating power
against free parameters of the theory.
