Nummulitidae

{{One source|date=January 2025}}

{{automatic taxobox

| taxon = Nummulitidae

| authority = Blainville, 1827

| subdivision_ranks = Genera

| subdivision_ref =

| subdivision = {{linked genus list

| Assilina | d'Orbigny, 1839

| Cycloclypeus | W.B. Carpenter, 1856

| Heterocyclina | Hottinger, 1977

| Heterostegina | d'Orbigny, 1826

| Nummulites | Lamarck, 1801

| Operculina | d'Orbigny, 1826

| Operculinella | Yabe, 1918

| Planoperculina | Hottinger, 1977

| Planostegina | Banner & Hodgkinson, 1991

}}

}}

Nummulitidae is a family of foraminifera in the order Rotaliida. It was described in 1827 by Henri Marie Ducrotay de Blainville.