We report the ligand‐enabled C−H activation/olefination of freecarboxylicacids in the γ‐position. Through an intramolecular Michael addition, δ‐lactones are obtained as products. Two distinct ligand classes are identified that enable the challenging palladium‐catalyzed activation of freecarboxylicacids in the γ‐position. The developed protocol features a wide range of acid substrates and olefin