UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	December 20, 2012 9:30 A.M.

Form:

N-14

CIK: 0000277751 Company Name: JANUS INVESTMENT FUND File Number: 333-184086 SERIES/CLASSES (CONTRACTS) MERGERS CIK Series ID Class/Contract Name Acquiring: 0000277751 JANUS INVESTMENT FUND S000010489 Janus Worldwide Fund C000028951 Class T Target: 0000277751 JANUS INVESTMENT FUND S000010477 Janus Global Research Fund C000028936 Class T CIK Series ID Class/Contract Name Acquiring: 0000277751 JANUS INVESTMENT FUND S000010489 Janus Worldwide Fund C000077732 Class A Target: 0000277751 JANUS INVESTMENT FUND S000010477 Janus Global Research Fund C000077693 Class A CIK Series ID Class/Contract Name Acquiring: 0000277751 JANUS INVESTMENT FUND S000010489 Janus Worldwide Fund C000077733 Class C Target: 0000277751 JANUS INVESTMENT FUND S000010477 Janus Global Research Fund C000077694 Class C CIK Series ID Class/Contract Name Acquiring: 0000277751 JANUS INVESTMENT FUND S000010489 Janus Worldwide Fund C000077734 Class I Target: 0000277751 JANUS INVESTMENT FUND S000010477 Janus Global Research Fund C000077695 Class I CIK Series ID Class/Contract Name Acquiring: 0000277751 JANUS INVESTMENT FUND S000010489 Janus Worldwide Fund C000077736 Class S Target: 0000277751 JANUS INVESTMENT FUND S000010477 Janus Global Research Fund C000077696 Class S CIK Series ID Class/Contract Name Acquiring: 0000277751 JANUS INVESTMENT FUND S000010489 Janus Worldwide Fund C000083534 Class D Target: 0000277751 JANUS INVESTMENT FUND S000010477 Janus Global Research Fund C000083523 Class D CIK Series ID Class/Contract Name Acquiring: 0000277751 JANUS INVESTMENT FUND S000010489 Janus Worldwide Fund C000114882 Class N Target: 0000277751 JANUS INVESTMENT FUND S000010477 Janus Global Research Fund C000114877 Class N