UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: October 21, 2021
Accession Number: 0000940394-21-001267
Submission Type: POS 8C
CIK: 0001070732
Company Name: EATON VANCE SENIOR INCOME TRUST
File Number: 333-227968