diff --git a/hibernate-core/src/main/java/org/hibernate/query/sqm/internal/SqmUtil.java b/hibernate-core/src/main/java/org/hibernate/query/sqm/internal/SqmUtil.java
index 4cae5391943a..cca8ee9a45c2 100644
--- a/hibernate-core/src/main/java/org/hibernate/query/sqm/internal/SqmUtil.java
+++ b/hibernate-core/src/main/java/org/hibernate/query/sqm/internal/SqmUtil.java
@@ -246,7 +246,7 @@ public static boolean isFkOptimizationAllowed(SqmPath<?> sqmPath) {
 	 * or one that has an explicit on clause predicate.
 	 */
 	public static boolean isFkOptimizationAllowed(SqmPath<?> sqmPath, EntityAssociationMapping associationMapping) {
-		if ( sqmPath instanceof SqmJoin<?, ?> sqmJoin ) {
+		if ( associationMapping.isFkOptimizationAllowed() && sqmPath instanceof SqmJoin<?, ?> sqmJoin ) {
 			switch ( sqmJoin.getSqmJoinType() ) {
 				case LEFT:
 					if ( isFiltered( associationMapping ) ) {
diff --git a/hibernate-core/src/main/java/org/hibernate/query/sqm/sql/BaseSqmToSqlAstConverter.java b/hibernate-core/src/main/java/org/hibernate/query/sqm/sql/BaseSqmToSqlAstConverter.java
index 5212a591a53e..9fd2dfcfbeaa 100644
--- a/hibernate-core/src/main/java/org/hibernate/query/sqm/sql/BaseSqmToSqlAstConverter.java
+++ b/hibernate-core/src/main/java/org/hibernate/query/sqm/sql/BaseSqmToSqlAstConverter.java
@@ -4138,12 +4138,11 @@ private Expression visitTableGroup(TableGroup tableGroup, SqmPath<?> path) {
 			if ( inferredEntityMapping == null ) {
 				// When the inferred mapping is null, we try to resolve to the FK by default, which is fine because
 				// expansion to all target columns for select and group by clauses is handled in EntityValuedPathInterpretation
-				if ( entityValuedModelPart instanceof EntityAssociationMapping
-						&& isFkOptimizationAllowed( path, (EntityAssociationMapping) entityValuedModelPart ) ) {
+				if ( entityValuedModelPart instanceof EntityAssociationMapping associationMapping
+						&& isFkOptimizationAllowed( path, associationMapping ) ) {
 					// If the table group uses an association mapping that is not a one-to-many,
 					// we make use of the FK model part - unless the path is a non-optimizable join,
 					// for which we should always use the target's identifier to preserve semantics
-					final EntityAssociationMapping associationMapping = (EntityAssociationMapping) entityValuedModelPart;
 					final ModelPart targetPart = associationMapping.getForeignKeyDescriptor().getPart(
 							associationMapping.getSideNature()
 					);
diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/jpa/criteria/CriteriaSelectOneToOneUnownedTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/jpa/criteria/CriteriaSelectOneToOneUnownedTest.java
new file mode 100644
index 000000000000..cf086f3e7b3e
--- /dev/null
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/jpa/criteria/CriteriaSelectOneToOneUnownedTest.java
@@ -0,0 +1,138 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.jpa.criteria;
+
+import java.util.List;
+
+import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
+import org.hibernate.testing.orm.junit.JiraKey;
+import org.hibernate.testing.orm.junit.Jpa;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToOne;
+import jakarta.persistence.criteria.CriteriaBuilder;
+import jakarta.persistence.criteria.CriteriaQuery;
+import jakarta.persistence.criteria.Join;
+import jakarta.persistence.criteria.JoinType;
+import jakarta.persistence.criteria.Root;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+@Jpa(
+		annotatedClasses = {
+				CriteriaSelectOneToOneUnownedTest.Parent.class,
+				CriteriaSelectOneToOneUnownedTest.Child.class,
+		}
+)
+@JiraKey("HHH-18628")
+public class CriteriaSelectOneToOneUnownedTest {
+
+	@BeforeEach
+	public void setUp(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+					Child child = new Child( 1l, "child" );
+					Parent parent = new Parent( 1l, "parent", child );
+					entityManager.persist( parent );
+				}
+		);
+	}
+
+	@AfterEach
+	public void tearDown(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+					entityManager.createQuery( "delete from Child" ).executeUpdate();
+					entityManager.createQuery( "delete from Parent" ).executeUpdate();
+				}
+		);
+	}
+
+	@Test
+	public void testCriteriaInnerJoin(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+					CriteriaBuilder cb = entityManager.getCriteriaBuilder();
+
+					CriteriaQuery<Child> query = cb.createQuery( Child.class );
+					Root<Parent> parent = query.from( Parent.class );
+					Join<Parent, Child> child = parent.join( "child", JoinType.INNER );
+					query.select( child );
+
+					List<Child> children = entityManager.createQuery( query ).getResultList();
+					assertThat( children ).isNotNull();
+					assertThat( children.size() ).isEqualTo( 1 );
+					Child c = children.get( 0 );
+					assertThat( c ).isNotNull();
+				} );
+	}
+
+	@Test
+	public void testCriteriaLeftJoin(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+					CriteriaBuilder cb = entityManager.getCriteriaBuilder();
+
+					CriteriaQuery<Child> query = cb.createQuery( Child.class );
+					Root<Parent> parent = query.from( Parent.class );
+					Join<Parent, Child> child = parent.join( "child", JoinType.LEFT );
+					query.select( child );
+
+					List<Child> children = entityManager.createQuery( query ).getResultList();
+					assertThat( children ).isNotNull();
+					assertThat( children.size() ).isEqualTo( 1 );
+					Child c = children.get( 0 );
+					assertThat( c ).isNotNull();
+				} );
+	}
+
+	@Entity(name = "Parent")
+	public static class Parent {
+		@Id
+		private Long id;
+
+		private String name;
+
+		@OneToOne(mappedBy = "parent", cascade = CascadeType.PERSIST)
+		private Child child;
+
+		public Parent() {
+		}
+
+		public Parent(Long id, String name, Child child) {
+			this.id = id;
+			this.name = name;
+			this.child = child;
+			child.parent = this;
+		}
+	}
+
+	@Entity(name = "Child")
+	public static class Child {
+
+		@Id
+		private Long id;
+
+		private String name;
+
+		@OneToOne(optional = false, fetch = FetchType.LAZY)
+		private Parent parent;
+
+		public Child() {
+		}
+
+		public Child(Long id, String name) {
+			this.id = id;
+			this.name = name;
+		}
+	}
+
+}