My wife and I run a multi-member LLC. Turbotax Home and Business asks if I, my wife or both own the LLC. Can I select my wife instead of splitting our schedule C ?

If you are in a community property state, you can claim the income and expenses of the LLC by dividing the income and expenses between two schedule C's. However, if you are not in a community property state, you will need to report the income of the LLC on a Form 1065 partnership. Regardless, you can file on a Form 1065 partnership return if you choose. 

See the following from a previous answer:

Here are the requirements to file your business tax information as a qualified joint venture.

Partnerships (or LLCs in community property states) with husband and wife owners can file schedule Cs for each of their portions of the partnership’s income instead of filing a Form 1065 partnership return by electing to be treated as a qualified joint venture. The requirements are as follows:

• The business is unincorporated or not organized as a limited liability company (unless the husband and wife live in a community property state).
• The only owners of the business are the husband and wife.
• Both spouses materially participate in the business operations.
• Both spouses agree and elect not to file their tax return as a partnership.
• Each spouse reports their full share of income and expenses on separate schedule Cs.