Alonzo Arza Hinckley (April 23, 1870 – December 22, 1936) was a member of the Quorum of the Twelve Apostles of the Church of Jesus Christ of Latter-day Saints (LDS Church) from 1934 until his death.

He married his wife Rose May Robison in 1892 in the Manti Temple.

[1] On August 11, 1912, during a conference in Millard County, Utah, Hinckley was selected to be president of the newly formed Deseret Stake, which was located in the western half of Millard County, Utah.

[2] Hinckley was ordained an apostle on October 11, 1934, to fill a vacancy in the Quorum of the Twelve Apostles created by elevation of David O. McKay to the First Presidency following the death of Anthony W. Ivins.

Hinckley died of stomach cancer on December 22, 1936, in Salt Lake City.