Luciu

{{for|the village in Ialomița County|Gura Ialomiței}}

{{Infobox Romanian subdivision

|type = commune

|county = Buzău

|population_total = auto

|map_caption = Location in Buzău County

|subdivisions = Caragele, Luciu

| name = Luciu

| image_skyline =

| image_caption =

| image_shield =

| image_map = Luciu jud Buzau.png

| coordinates = {{coord|44|58|10|N|27|4|45|E|display=inline,title}}

| established_date =

| area_total_km2 =

|leader_name = Mircea Frățilă{{cite web |url=https://prezenta.roaep.ro/locale27092020/romania-pv-final |title=Results of the 2020 local elections |publisher=Central Electoral Bureau |access-date=15 June 2021 |df=dmy-all}}

|leader_term = 2020–2024

|leader_party = PSD

| postal_code =

| website =

}}

Luciu is a commune in Buzău County, Muntenia, Romania. It is composed of two villages, Caragele and Luciu.

The Caragele gas field (with the largest onshore gas reserves in Romania) is located on the administrative territory of the commune.