No, you generally cannot get accepted into a Master of Business Administration (MBA) program without first earning a bachelor's degree. MBAs are postgraduate degrees, meaning they require a prior undergraduate degree as a prerequisite. While some programs might have slightly flexible admission criteria (e.g., extensive relevant work experience might be considered in lieu of *some* undergraduate coursework), a bachelor's degree is almost universally required.
There are no accredited online colleges that offer an MBA program without a bachelor's degree. Any institution advertising such a program is likely either unaccredited or fraudulent. A legitimate MBA from an accredited institution will always require a bachelor's degree. Always verify the accreditation of any online college before enrolling.