diff --git a/include/spdk/nvme_zns.h b/include/spdk/nvme_zns.h
index dd0de784f4..025f5b0917 100644
--- a/include/spdk/nvme_zns.h
+++ b/include/spdk/nvme_zns.h
@@ -113,6 +113,23 @@ uint64_t spdk_nvme_zns_ns_get_num_zones(struct spdk_nvme_ns *ns);
  */
 uint32_t spdk_nvme_zns_ns_get_max_open_zones(struct spdk_nvme_ns *ns);
 
+/**
+ * Get the maximum number of active zones for the given namespace.
+ *
+ * An active zone is a zone in any of the zone states:
+ * EXPLICIT OPEN, IMPLICIT OPEN or CLOSED.
+ *
+ * If this value is 0, there is no limit.
+ *
+ * This function is thread safe and can be called at any point while the controller
+ * is attached to the SPDK NVMe driver.
+ *
+ * \param ns Namespace to query.
+ *
+ * \return the maximum number of active zones.
+ */
+uint32_t spdk_nvme_zns_ns_get_max_active_zones(struct spdk_nvme_ns *ns);
+
 /**
  * Get the Zoned Namespace Command Set Specific Identify Controller data
  * as defined by the NVMe Zoned Namespace Command Set Specification.
diff --git a/lib/nvme/nvme_zns.c b/lib/nvme/nvme_zns.c
index 825102bc7b..bdccb7742e 100644
--- a/lib/nvme/nvme_zns.c
+++ b/lib/nvme/nvme_zns.c
@@ -68,6 +68,14 @@ spdk_nvme_zns_ns_get_max_open_zones(struct spdk_nvme_ns *ns)
 	return nsdata_zns->mor + 1;
 }
 
+uint32_t
+spdk_nvme_zns_ns_get_max_active_zones(struct spdk_nvme_ns *ns)
+{
+	const struct spdk_nvme_zns_ns_data *nsdata_zns = spdk_nvme_zns_ns_get_data(ns);
+
+	return nsdata_zns->mar + 1;
+}
+
 const struct spdk_nvme_zns_ctrlr_data *
 spdk_nvme_zns_ctrlr_get_data(struct spdk_nvme_ctrlr *ctrlr)
 {
diff --git a/lib/nvme/spdk_nvme.map b/lib/nvme/spdk_nvme.map
index f2b75b54c4..0675eb1a8e 100644
--- a/lib/nvme/spdk_nvme.map
+++ b/lib/nvme/spdk_nvme.map
@@ -174,6 +174,7 @@
 	spdk_nvme_zns_ns_get_zone_size;
 	spdk_nvme_zns_ns_get_num_zones;
 	spdk_nvme_zns_ns_get_max_open_zones;
+	spdk_nvme_zns_ns_get_max_active_zones;
 	spdk_nvme_zns_ctrlr_get_data;
 	spdk_nvme_zns_ctrlr_get_max_zone_append_size;
 	spdk_nvme_zns_zone_append;