"The Vice President has retained Richard Cullen of McGuire Woods to assist him in responding to inquiries by the special counsel," Pence communications director Jared Agen said in a statement.
"The vice president is focused entirely on his duties and promoting the president's agenda and looks forward to a swift conclusion of this matter."
Pence's announcement comes after several weeks of deliberations, featuring several candidates, an administration official said, adding that no taxpayer money will be used.
A final decision was made to hire Cullen earlier this week.
Pence's move follows a decision by President Donald Trump to hire outside counsel Marc Kasowitz and could signal the investigation is entering a new phase.
Amid reports that special counsel Robert Mueller is also looking into whether Trump tried to obstruct justice, several White House aides are expected to be contacted by his team and are in the process of "lawyering up."
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