This paper investigates relative clause deletion in English. Relative clause deletion is found in coordinate structures and comparatives. Some issues that are discussed include: identity and parallelism conditions on deletion, deletion of non-relative clause modifiers, deletion of relative clauses with definite DPs, reconstruction into deleted relative clauses, strict and sloppy readings of pronouns in deleted relative clauses, the phi-features of pronouns and the implications of relative clause deletion for the structure of relative clauses.