Montagu Venables-Bertie, 2nd Earl of Abingdon PC (4 February 1673 – 16 June 1743), styled Hon. Montagu Bertie until 1682 and Lord Norreys from 1682 to 1699, was an English nobleman.
Montagu was the eldest son of James Bertie, 1st Earl of Abingdon and Eleanora Lee. Though young not yet matriculated, he was chosen captain of the company of militia foot raised from Christ Church during the Monmouth Rebellion. Through the influence of his father, he was made a freeman and common councilman of in 1686, and a freeman of Oxford in 1687. On 22 September 1687, he married Anne (d. 28 April 1715), the daughter and coheiress of Peter Venables (d. 1679), baron of Kinderton. He shortly afterwards assumed the additional surname of Venables. At the January 1689 election, he was returned, though underage, as a knight of the shire for Berkshire on his father's interest. During the year, he was made a bailiff of Oxford and appointed a deputy lieutenant of Oxfordshire, holding that office until 1701.
Despite his age, he appears several times in the records of the Convention Parliament. Like the bulk of his family, he was a Tory, and voted to agree with the Lords that the throne was not vacant after the flight of James II. A member of several committees, he spoke briefly in May on the quarrel between his uncle Henry Bertie and Sir William Harbord.
Norreys stood for Berkshire again in the 1690 election, but the field was far more crowded; Lord Lovelace agitated on behalf of a Whig candidate, Richard Neville, and Abingdon put Norreys in on his interest for Oxfordshire as well.