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We report the observation of charmless hadronic decays
of charged B mesons to the final state K+K-pi+. Using
a data sample of 347.5 fb^-1 collected at the Y(4S)
resonance with the BABAR detector, we observe 429+/-43
signal events with a significance of 9.6 sigma. We
measure the inclusive branching fraction BF(B+ -> K+K-pi+)
= [5.0+/-0.5(stat.)+/-0.5(syst.)]x10^-6. Inspection of
the Dalitz plot of signal candidates shows a broad
structure peaking near 1.5 GeV/c^2 in the K+K- invariant
mass distribution. We find the direct CP asymmetry to be
consistent with zero.
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