QuickLinks -- Click here to rapidly navigate through this document

Exhibit 32.1

TE CONNECTIVITY LTD.
CERTIFICATION PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        The undersigned officers of TE Connectivity Ltd. (the "Company") hereby certify to their knowledge that the Company's Annual Report on Form 10-K for the fiscal year ended September 29, 2017 (the "Report"), as filed with the Securities and Exchange Commission on the date hereof, fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ TERRENCE R. CURTIN
Terrence R. Curtin
Chief Executive Officer
November 14, 2017

/s/ HEATH A. MITTS
Heath A. Mitts
Executive Vice President and Chief Financial Officer
November 14, 2017

QuickLinks

Exhibit 32.1

TE CONNECTIVITY LTD. CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002