Brita Alvern (Year of death unknown), was an alleged Norwegian witch. She was accused for sorcery in 1729, which makes it one of the latest witch trials in Scandinavia. As the documentation of the trial is incomplete, it is unknown whether she was executed or not. Her trial is regarded as notable, as it illustrates the witch trials at the outbreak of a new age, and a conflict between a public which still believed in witches, and authorities which had become skeptical despite the law.
Brita Alvern was put in trial accused of witch craft at Indredale Skipreide in Sunnfjord 19 February 1729. She was reported by the bailiff Hugo Friderich Mortensen upon the request of the parish vicar and the public. She denied the charges. When the bailiff applied to the higher court for permission to pursue the case further, he was met with the reply that if he wish to do so, he must do so on his own responsibility and risk his reputation, because witch trials were nonsense which were infamous for having led to the condemnation of innocent in the past. The bailiff had the support by the church, which he pointed out, but was met with the reply that the church were not to be involved in such matters. Nevertheless, the 9 August 1729, Alvern were put on trial, now together with her brother Ole. This time, Brita Alvern confessed to have med Satan in the shape of a human with red claws, who had given her the ability to inflict sickness upon humans and animals, while Ole confessed to have been given the ability to cure goaut and bleeding. The bailiff now again applied to the higher authority to pursue the case further. This time, he was met with the reply that if it was necessary to continue, he should to it quickly. it is not known what happened after this, because the documents of the rest of the trial is missing. As Brita and Ole had confessed to their guilt, they are likely to have been sentenced to death. If so, they were likely the last people in Norway to have been executed for sorcery. This was however not the last witch trial in Norway: in 1732, six people in Möre og Romsdal were sentenced for sorcery, though they were not executed, and in 1754, Susanne Monsdatter were trialed in Hordaland. The 18th-century Norwegian witch trials, however, either did not lead to death sentences, or the documentation appear to have been missing. The last confirmed execution for sorcery in Norway was that of Johanne Nilsdatter in Kvæfjord in Sör-Troms in 1695.