Nektaspida (also called Naraoiida, Nektaspia and Nectaspida) is an extinct order of non-mineralised artiopodan arthropods.

Originally classified as trilobites, which they superficially resemble, they are now placed as close relatives as members of the Trilobitomorpha within Artiopoda.

[7] Preserved soft tissue of the group indicates that the cephalic (head) shield of nektaspids and liwiids contained branched digestive glands.

Naraoiidae were diverse in low latitudes during Cambrian Series 2 and the following Miaolingian in Laurentia and in South China.

[2] The youngest known member of the group is the Laurentian naraoiid Naraoia bertensis from the Bertie Formation in Ontario, Canada, dating to the Upper Silurian.