In the present paper I investigate subordination of existence and possessive clauses in contemporary Oghuz (Southwest) and Kipchak (Northwest) Turkic languages from comparative and typological points of view. One of the typological features of Turkic languages is that existence and possessive clauses are based on the same predicates. The characteristics and crosslinguistic distribution of two predicate types used in complementation and relativization of these clauses will be analyzed; these are the nonverbal predicate {BAR} and the verbal predicate {BoL}. The following results have been found. Kipchak Turkic languages, as well as Turkmen, an East Oghuz language spoken in Central Asia, use both {BAR} and {BoL} (in their bare forms or in various extended forms). The respective clauses in these languages are accordingly characterized by a formal diversity which to a certain extent ensures that distinct semantic notions are encoded by distinct formal devices. While {BAR} is also attested in some Turkish dialects, Standard Turkish (West Oghuz) makes exclusive use of {Bm}, a verb that allows ambiguities by being able to appear in quite a number of meanings and functions. In Turkic varieties that, as a result of intensive contact with Iranian or Slavic languages, exhibit right-branching and finite subordinate clauses, {BAR} appears as a typical predicate. Keywords: Kipchak Turkic, Turkish dialects, Turkmen, subordination, possessive clause, existence clause