The 38th Separate Marine Brigade (Ukrainian: 38-ма окрема бригада морської піхоти, romanized: 38-ma okrema bryhada morsʹkoyi pikhoty; 38 ОБрМП, unit number A4765), is a marine infantry brigade of the Ukrainian Marine Corps of the Armed Forces of Ukraine.

The 38th brigade was formed out of a basis of the 503rd Separate Marine Battalion in February 2023.

The unit was formed as part of an expansion to the Ukrainian Naval Infantry alongside the 37th Marine Brigade.

[1] During the 2023 Ukrainian counteroffensive the unit has been equipped with French manufactured AMX-10 RC armoured reconnaissance vehicles.

Working together with 35th Marine Brigade they liberated the village of Urozhaine on August 16, 2023.