Charles W. Missler (May 28, 1934 – May 1, 2018) was an American author, evangelical Christian, Bible teacher, engineer, and businessman.

[7] In 1989, he headed the Phoenix Group International, a former Colorado real estate company that entered the high-tech industry to sell personal computers to Russian schools.

[8] Phoenix filed for bankruptcy protection in 1990 when the deal did not develop as anticipated, due to a subsidiary being found to have no experience with computers.

[9][10] After the Phoenix deal collapsed, Missler started an online ministry, Koinonia House, and became known as a prominent Christian Zionist and speaker on the subject of Bible prophecy.

"[12] After the missed attribution was acknowledged by Missler,[13] book shipments to bookstores were discontinued and all of the authors' proceeds donated to a ministry.

[17] In 1998, he coauthored a book with John Ankerberg investigating whether America would survive the crises to be caused, he claimed, by embedded computer chips that would malfunction on what they would calculate as year zero.