The unique position of WH words in Slavic languages is discussed, with specific reference to Bulgarian and Serbo-Croatian. The multiple fronting characteristics of Bulgarian and Serbo-Croatian differ in terms of the following positions and behaviors: extraction from embedded questions; clitic placement and other indications of constituent status; and word order. Multiple extraction allows the movement of multiple WH words out of an embedded clause. In Bulgarian all WH words in a multiple question must move to a higher clause but only if the question is non-interrogative; in Serbo-Croatian only one WH word can be extracted from a clause. The position of clitics ( i.e. object pronouns) relative to WH words must come after the whole WH word sequence in Bulgarian; in Serbo-Croatian the clitics follow the first WH word and may not come after the group. Adverbs, parentheticals, and various particles can also split the WH word order sequence in Serbo-Croatian but not in Bulgarian. WH words in Bulgarian occur in a relatively fixed order; for example, nominative case precedes accusative. In Serbo-Croatian, the order of the fronted WH words appears to be entirely free; for example, the accusative and nominative can occur in either order. The varying properties of Bulgarian and Serbo-Croatian WH words divide other Slavic languages into two major clusters; for instance, Romanian shares the relevant properties of Bulgarian, while Polish and Czech follow the Serbo-Croatian pattern. (TR)