diff --git a/src/main/java/org/springframework/data/repository/query/parser/PartTree.java b/src/main/java/org/springframework/data/repository/query/parser/PartTree.java
index 647b8f109..992c171d9 100644
--- a/src/main/java/org/springframework/data/repository/query/parser/PartTree.java
+++ b/src/main/java/org/springframework/data/repository/query/parser/PartTree.java
@@ -87,6 +87,12 @@ public class PartTree implements Streamable<OrPart> {
 		Assert.notNull(source, "Source must not be null");
 		Assert.notNull(domainClass, "Domain class must not be null");
 
+		// Kotlin name mangling, @JvmName cannot be used with interfaces
+		int dash = source.indexOf('-');
+		if (dash > -1) {
+			source = source.substring(0, dash);
+		}
+
 		Matcher matcher = PREFIX_TEMPLATE.matcher(source);
 
 		if (!matcher.find()) {
diff --git a/src/test/java/org/springframework/data/repository/query/parser/PartTreeUnitTests.java b/src/test/java/org/springframework/data/repository/query/parser/PartTreeUnitTests.java
index 00a3acd10..4c046098d 100755
--- a/src/test/java/org/springframework/data/repository/query/parser/PartTreeUnitTests.java
+++ b/src/test/java/org/springframework/data/repository/query/parser/PartTreeUnitTests.java
@@ -27,7 +27,6 @@ import java.util.Date;
 import java.util.List;
 
 import org.junit.jupiter.api.Test;
-
 import org.springframework.data.domain.Limit;
 import org.springframework.data.domain.Sort;
 import org.springframework.data.mapping.PropertyPath;
@@ -657,6 +656,14 @@ class PartTreeUnitTests {
 		assertThat(tree.getSort()).hasSize(1);
 	}
 
+	@Test // GH-2965
+	void unmangleKotlinMethodName() {
+
+		var tree = new PartTree("findById-u1QWhUI", Order.class);
+
+		assertThat(tree.getParts()).hasSize(1);
+	}
+
 	private static void assertLimiting(String methodName, Class<?> entityType, boolean limiting, Integer maxResults) {
 		assertLimiting(methodName, entityType, limiting, maxResults, false);
 	}