A Study of LY3437943 in Japanese Participants With Type 2 Diabetes Mellitus (T2DM)

Inclusion Criteria: * Have type 2 diabetes mellitus (T2DM) diagnosed for at least 1 year. * Have glycated hemoglobin (HbA1c) value ≥ 7.0% and ≤10.0% for participants treated with diet and exercise or HbA1c ≥ 6.5% and ≤ 9.0% for participants who have washed out antidiabetic medications at lead-in and screening * Have a body mass index (BMI) within the range 23 to 35 kilograms per square meter (kg/m²), inclusive, and a body weight of at least 54 kilograms (Kg). * Males and females not of childbearing potential Exclusion Criteria: * Have type 1 diabetes mellitus (T1DM) * Have uncontrolled diabetes defined as an episode of ketoacidosis or hyperosmolar state requiring hospitalization * Have had an episode of severe hypoglycemia, as defined by the occurrence of neuroglycopenic symptoms requiring the assistance of another person for recovery, or have a history of hypoglycemia unawareness or poor recognition of hypoglycemic symptoms. * Have a history of acute or chronic pancreatitis or fasting serum triglyceride level of \>500 milligram per deciliter (mg/dL). * Have known liver disease, obvious clinical signs or symptoms of liver disease, acute or chronic hepatitis, or have elevations in aminotransferases (alanine aminotransferase \[ALT\] and aspartate aminotransferase \[AST\]) greater than 3× upper limit of normal (ULN).