Ann Weiser Cornell (born Ann Weiser on October 6, 1949 in Chicago, Illinois) is an American author, educator, and worldwide authority on Focusing, the self-inquiry psychotherapeutic technique developed by Eugene Gendlin. She has written several definitive books on Focusing, including The Power of Focusing: A Practical Guide to Emotional Self-Healing, The Focusing Student's and Companion's Manual, and Focusing in Clinical Practice. Cornell has taught Focusing around the world since 1980, and has developed a system and technique called Inner Relationship Focusing. Cornell is also a past president of the Association for Humanistic Psychology.