· Olaf
· Oliver
· Omar
· Orlando
· Oscar
· Otto
· Owen
Octopus, Ocean, Orca, Otter, Oyster
Yosemite Yosemite
An Italian company name that begins with "R" and ends with "o" is Roncato.
Adrian
Ohio
okra
Ohio
Zack, Zach, Zachary
Freddy
Oyster
Oryx.
Oman