diff --git a/FoldOptLib/types/enums.py b/FoldOptLib/types/enums.py
new file mode 100644
index 0000000..3381f72
--- /dev/null
+++ b/FoldOptLib/types/enums.py
@@ -0,0 +1,27 @@
+from enum import IntEnum
+
+
+class DataType(IntEnum):
+    FoldedAxialSurface = 0
+    FoldedFoliation = 0
+    GeologicalKnowledge = 1
+    BoundingBox = 2
+
+class ObjectiveType(IntEnum):
+    Asymmetry = 0
+    AxialTrace = 1
+    FoldWavelength = 2
+    AxisWavelength = 3
+    Tightness = 4
+    HingeAngle = 5
+    AxialSurface = 6
+
+class DistributionType(IntEnum):
+    Normal = 0
+    VonMisesFisher = 1
+
+class OptimisationType(IntEnum):
+    Angle = 0
+    MaximumLikelihoodEstimation = 1
+    LeastSquares = 2
+    Probabilistic = 3
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