return address
US /rɪˈtɜːrn əˈdres/
UK /rɪˈtɜːrn əˈdres/

1.
差出人住所, 返送先住所
the address of the sender, typically placed on the top left corner of an envelope or package
:
•
Please make sure to include your return address on the envelope.
封筒に差出人住所を必ず記載してください。
•
The package was sent back because there was no return address.
差出人住所がなかったため、荷物が返送されました。