Lawrence Dominick Wollersheim is an American former Scientologist who won a court judgement against Church of Scientology for compensation for the organization's fraud, intentional infliction of emotional injury, and negligent infliction of emotional injury.

Wollersheim sued the Church of Scientology in 1980. The story of Xenu was made public when Church materials detailing the Operating Thetan Level 3 were used as exhibits. In Wollersheim's court case, Scientology's "top secret" materials about Xenu and their beliefs in past alien invasions of Earth was filed with the Los Angeles court on his behalf and then copied from court records and published by media all over the world. Wollersheim won the case and was ultimately awarded $2.5 million in 1989 (equivalent to $6.5 million in 2025). Officials from the Scientology organization said they would not pay the judgement. The organization removed assets from the Church of Scientology legal entity against which the judgement was made, in order to fraudulently claim it was bankrupt, but in 2002 it was forced to pay the award with interest, totalling $8.7 million (equivalent to $15.6 million in 2025).

Wollersheim co-founded Factnet.org in 1993, an organization whose stated goal was to help other victims of cult abuse. He has since been active with several other non-profit organizations.

Wollersheim first got into Scientology in 1969. In 1973, he joined Scientology's Sea Org and worked at the Celebrity Centre, and later was sent to Scientology's ship, the Bolivar. There, he was put on a strenuous work regime of 19-hour days and forced to sleep nine deep in the ship's hold. He tried to escape the ship because he felt he was losing his mind, but he was captured and returned. He was convinced to disconnect from his wife, parents, and other family members, and was threatened with a freeloader bill if he left. At times he was locked in the ship's hold for 18 hours a day, deprived of sleep, and fed only once a day.

Wollersheim said "I went psychotic on OT III. I lost a sense of who I was." In 1979, he contemplated suicide, and Scientology forced him into more auditing. He had two further psychotic breaks during auditing procedures.

Wollersheim left the Sea Org and had been operating a business selling photography; almost all of his clients and 132 employees were Scientologists. When Scientology started their fair game tactics, they instructed all Scientologists to resign from working for him, to stop placing new orders, and stop paying any bills owed  – driving Wollersheim into bankruptcy. His mental condition deteriorated, and he ended up under psychiatric care.

In 1980, Wollersheim filed a lawsuit against the Church of Scientology alleging fraud, intentional infliction of emotional injury, and negligent infliction of emotional injury.

To derail the lawsuit, Scientology filed a RICO lawsuit against Wollersheim, and then a second, third, and fourth lawsuit – each were thrown out by the courts. They sued his attorneys and expert witnesses and started a campaign to discredit or blackmail one of his attorneys. The church also harassed the judge in the case, who claims he was followed, had his tires slashed, and his pet dog drowned in his pool.