<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Tue Sep 29 13:00:05 UTC 2026 -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
  <roleRef xlink:type="simple" xlink:href="br-20261110.xsd#br_r_AdditionalDimensions" roleURI="http://www.broadridge.com/role/AdditionalDimensions"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all"/>
<!-- [WMV7][GyZ6fQipYz4uhI2UMwDDFMd9ZFXFbYT2fY3alQqPVS77vAg1oFI67yjzzW0d9UdMwIliBfNbeeH6zC+u8Fishci/8+elD9d4hyFSvgbs1gKq4rvfuhlwQ5XixklTBVs/TijVwW4KBpoyKBTJmNi4H4ucNTcZ9sv6GnzjD1jAs2m8XNiSDlteTgwOwsiUD0zNjR8tJME8X3Npb2QPsWbMs3X5vfBjryPdtPVreWPJXcYywDLyf8tZqjyQsb50LR8JouFtkdwc+lFA369TRu6LEQSr4ISe32x75ivBspxI2R+XSxOUtX2hRQ0h9XnQllwVph6ILhvillb0miTWDqjuP9E3GRgVYodUzdxGTzdAvvh/MQoBhlrrEr7r5rcTRpkOFzvmaoYdVoc=] CSR-->
  <definitionLink xlink:role="http://www.broadridge.com/role/AdditionalDimensions" xlink:type="extended"/>
</linkbase>
