<ACCESSION-NUMBER>0000914025-19-000021 <TYPE>10-K <PUBLIC-DOCUMENT-COUNT>133 <PERIOD>20190330 <FILING-DATE>20190517 <DATE-OF-FILING-DATE-CHANGE>20190517 <FILER> <COMPANY-DATA> <CONFORMED-NAME>PLANTRONICS INC /CA/ <CIK>0000914025 <ASSIGNED-SIC>3661 <IRS-NUMBER>770207692 <STATE-OF-INCORPORATION>DE <FISCAL-YEAR-END>0330 </COMPANY-DATA> <FILING-VALUES> <FORM-TYPE>10-K <ACT>34 <FILE-NUMBER>001-12696 <FILM-NUMBER>19834964 </FILING-VALUES> <BUSINESS-ADDRESS> <STREET1>345 ENCINAL ST <CITY>SANTA CRUZ <STATE>CA <ZIP>95061-1802 <PHONE>8314587828 </BUSINESS-ADDRESS> <MAIL-ADDRESS> <STREET1>345 ENCINAL STREET <STREET2>PO BOX 1802 <CITY>SANTA CRUZ <STATE>CA <ZIP>95061-1802 </MAIL-ADDRESS> <FORMER-COMPANY> <FORMER-CONFORMED-NAME>PI PARENT CORP <DATE-CHANGED>19931025 </FORMER-COMPANY> </FILER>