William Frick (November 2, 1790 – July 29, 1855) was a justice of the Maryland Court of Appeals from 1848 to 1851.

[1] He was described as being "identified with almost every social and public enterprise of importance undertaken in the city".

[2][3] In June, 1848, Governor Francis Thomas appointed Frick as a judge of the Baltimore county courts and associate judge of the court of appeals, which offices he held until his election in 1851 as the first judge of the superior court of Baltimore City, where he remained until his death.

[1][2][4] On June 16, 1816, Frick married Mary Sloan,[1] with whom he had six sons and two daughters, William Frederick, Elizabeth A., Mary L., Charles, George P., Frank, James Sloan and William.

[5] He died on July 29, 1855, in Warm Springs, Virginia, after an illness of only a few days.