Keith Mathison Ligonier Ministries has a list and discussion of his top five commentaries on Lamentations at the Ligonier Ministries blog. The WBC by House is a good choice at number one, but
2. J. Andrew Dearman -- Jeremiah / Lamentations (NIV Application Commentary, 2002).
3. Philip Graham Ryken -- Jeremiah and Lamentations (Preaching the Word, 2001).
4. Tremper Longman -- Jeremiah, Lamentations (New International Biblical Commentary, 2008).
5. John Mackay -- Lamentations (