Exhibit 21.1

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SUBSIDIARIES OF THE REGISTRANT

Each of the below listed subsidiaries is 100% directly owned by CSP Inc. except as otherwise indicated, and all are included in the consolidated financial statements.

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NAME OF SUBSIDIARY		STATE OR OTHER JURISDICTION OF INCORPORATION/ ORGANIZATION
CSP Securities Corp. 175 Cabot Street, Suite 210 Lowell, MA 01854	​	Massachusetts
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CSP Inc. Foreign Sales Corp., Ltd. 175 Cabot Street, Suite 210 Lowell, MA 01854	​	U.S. Virgin Islands
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Modcomp, Inc (1). 1182 East Newport Center Drive Deerfield Beach, FL 33442	​	Delaware

(1) Modcomp has one subsidiary operating in Europe