Some names beginning with the letter O are:
Visitor has the sixth letter being an o.
Ohio and Oklahoma begin with the letter O. Oregon begins with the letter O.
Some six letter words that have O being the 5th letter:ActionAnalogAnchorAnyhowAuthorBaboonBallotBambooBarhopBarrowBeaconBeckonBellowBestowBetookBettorBillowBishopBorrowBottomBunionBusboyButtonCannonCannotCanyonCaptorCarbonCarboyCarhopCarrotCartonCensorClamorCocoonCommonConvoyCottonCouponCowboyCrayonCuckooCursorCustomDeaconDebtorDeployDoctorDollopDragonEditorEggnogEmployEscrowFactorFalconFallowFathomFellowFervorFlavorFollowForgotFusionGallonGallopGambolGlamorGodsonHallowHansomHarborHereofHereonHollowHorrorIceboxIndoorInflowJargon
Just O, but it has to be capitalized cause it's the name of a letter
Ohio begins with the letter O. Oklahoma and Oregon begin with the letter O.
Generous.
gecko
Horn.
Georgia O'Keefe was an American artist. Her name begins with the letter O.
name cars that end with o. such as ugo
oscar
Orange Ichneumonid wasp and owl moth are insects. They begin with the letter o.