You can with HipChat Server, which is a self-hosted version of HipChat that is currently in Beta. Here is more context around HipChat Server: https://confluence.atlassian.com/display/HC/HipChat+Server
The previous answer has the link to the latest documentation on connecting HipChat Server to LDAP.
Connecting to LDAP is not available for HipChat in the cloud (www.hipchat.com).
...have mention name FirstnameLastname. Fe.: @MaartenCautreels This certainly helps to know who is being mentioned in a conversation. Imagine your colleague sends the following message...
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