The Life of Percy Bysshe Shelley is an unfinished posthumous biography of the Romantic poet Percy Bysshe Shelley that was written by his friend Thomas Jefferson Hogg. The first two of the four planned volumes were released in 1858 to largely unfavourable reviews. Though a few friends of Percy Shelley enjoyed the book, many critics attacked the book for being poorly edited and for portraying Shelley negatively. Though more volumes were planned, they were never published because of the Shelley family's objections to Hogg's treatment of him.

Thomas Jefferson Hogg was a British barrister and writer best known for his friendship with the Romantic poet Percy Bysshe Shelley. Hogg was raised in County Durham, but spent most of his life in London. He and Shelley became friends while studying at University College, Oxford, and remained close until Shelley's death. During their time at Oxford they collaborated on several literary projects, culminating in their joint expulsion following the publication of an essay titled "The Necessity of Atheism". They remained good friends, but their relationship was sometimes strained because of Hogg's attraction to the women who were romantically involved with Shelley.