Mono- and multinuclear complexes of ruthenium and [n] cycloparaphenylene (CPP, n= 5 and 6) were synthesized in excellent yields through ligand exchange of the cationic complex [(Cp)Ru(CH3CN)(3)](PF6) with CPP. In the multinuclear complexes, ruthenium selectively coordinated to alternate paraphenylene units to give bis- and tris-coordinated Ru complexes for [5] and [6] CPPs, respectively. Single-crystal X-ray analysis revealed the Ru was coordinated with eta(6)-hapticity on the convex surface of CPP.