Louis Henry (German: Ludwig Heinrich) (11 October 1640 - 3 January 1674) was the Count Palatine of Simmern-Kaiserslautern from 1653 until 1673.
He succeeded his father in 1655, and was under the regency of his mother, Marie Eleonore von Brandenburg, till 1658.
He died less than a year later, and was buried in the St-Stephan's Church in Simmern.
[citation needed] Louis Henry married Maria of Orange-Nassau (5 September 1642 - 20 March 1688) in 1666, daughter of the Dutch prince Frederick Henry.
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