Dilemma inexpectatum

{{Short description|Species of bivalve}}

{{speciesbox

| image =

| image_caption =

| status = NU

| status_system = NZTCS

| status_ref = {{cite report|url=https://www.doc.govt.nz/globalassets/documents/science-and-technical/nztcs40entire.pdf|last1=Funnell|first1=Greig|last2=Gordon|first2=Dennis|last3=Daniel|first3=Leduc|last4=Makan|first4=Troy|last5=Marshall|first5=Bruce A.|last6=Mills|first6=Sadie|last7=Michel|first7=Pascale|last8=Read|first8=Geoff|last9=Schnabel|first9=Kareen|last10=Tracey|first10=Di|last11=Wing|first11=Stephen|editor-last=Todd|editor-first=Amanda|display-authors=1|title=Conservation status of indigenous marine invertebrates in Aotearoa New Zealand, 2021|publisher=New Zealand Department of Conservation|page=29|isbn=978-1-99-118365-1|date=January 2023|access-date=27 September 2024}}

| taxon = Dilemma inexpectatum

| authority = (Crozier, 1966)

| synonyms = Corculum inexpectatum Crozier, 1966

| synonyms_ref =

}}

Dilemma inexpectatum is a minute species of deepwater cockle, a marine bivalve mollusc in the family Cardiidae.