Lascaris or Laskaris (Greek: Λάσκαρης) is a Greek surname. It is the surname of:

• Byzantine royal family dynasty House of Laskaris:
  • Theodore I Laskaris (c. 1175–1221) Emperor of Byzantine Empire
  • Theodore II Laskaris (c. 1222–1258) Emperor of Byzantine Empire
  • John IV Laskaris (1250–c. 1305) Emperor of Byzantine Empire
  • Michael Laskaris Byzantine aristocrat and military commander
• Janus Lascaris (c. 1445–1535) Greek scholar in the Renaissance.
• Constantine Lascaris (1434–1501) Greek scholar in the Renaissance.
• Zoe Laskari (1942–2017) Greek actress.