diff --git a/src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/Server/ValueUtilsSmi.cs b/src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/Server/ValueUtilsSmi.cs
index 1fc31c287a..b6f8834f6b 100644
--- a/src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/Server/ValueUtilsSmi.cs
+++ b/src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/Server/ValueUtilsSmi.cs
@@ -2812,7 +2812,7 @@ int length
 /*DTOst*/{ _ ,  _ ,  _ , _ , _ , _  , _ , _ , _  , _  , _  , _  , _  , _ , _ , _  , _ , _  , _  , _ , _ , _  , _  , _  , _ , _  , _ , _ , _ ,  _ , _,  _  , _  , _  , X , },/*DateTimeOffset*/
 #if NET
 /*DOnly*/{ _ ,  _ ,  _ , _ , X , _  , _ , _ , _  , _  , _  , _  , _  , _ , _ , X  , _ , _  , _  , _ , _ , _  , _  , X  , _ , _  , _ , _ , _ ,  _ , _,  X  , _  , X  , _ , },/*DateOnly*/
-/*TOnly*/{ _ ,  _ ,  _ , _ , _ , _  , _ , _ , _  , _  , _  , _  , _  , _ , _ , _  , _ , _  , _  , _ , _ , _  , _  , _  , _ , _  , _ , _ , _ ,  _ , _,  _  , X  , _  , _ , },/*TimeOnly*/
+/*TOnly*/{ _ ,  _ ,  _ , _ , _ , _  , _ , _ , _  , _  , _  , _  , _  , _ , _ , _  , _ , _  , _  , _ , _ , _  , _  , X  , _ , _  , _ , _ , _ ,  _ , _,  _  , X  , _  , _ , },/*TimeOnly*/
 #endif
 /*Strm */{ _ ,  _ ,  _ , _ , _ , _  , _ , _ , _  , _  , _  , _  , _  , _ , _ , _  , _ , _  , _  , _ , _ , _  , _  , _  , _ , _  , _ , _ , _ ,  _ , _,  _  , _  , _  , _ , },/*Stream*/ 
 /*TxRdr*/{ _ ,  _ ,  _ , _ , _ , _  , _ , _ , _  , _  , _  , _  , _  , _ , _ , _  , _ , _  , _  , _ , _ , _  , _  , _  , _ , _  , _ , _ , _ ,  _ , _,  _  , _  , _  , _ , },/*TextReader*/
diff --git a/src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/TdsParser.cs b/src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/TdsParser.cs
index d8c904f1e0..7739bf70d7 100644
--- a/src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/TdsParser.cs
+++ b/src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/TdsParser.cs
@@ -7747,7 +7747,16 @@ internal Task WriteSqlVariantValue(object value, int length, int offset, TdsPars
 
                 case TdsEnums.SQLTIME:
                     stateObj.WriteByte(mt.Scale); //propbytes: scale
-                    WriteTime((TimeSpan)value, mt.Scale, length, stateObj);
+#if NET
+                    if (value is TimeOnly timeOnly)
+                    {
+                        WriteTime(timeOnly.ToTimeSpan(), mt.Scale, length, stateObj);
+                    }
+                    else
+#endif
+                    {
+                        WriteTime((TimeSpan)value, mt.Scale, length, stateObj);
+                    }
                     break;
 
                 case TdsEnums.SQLDATETIMEOFFSET:
@@ -7923,7 +7932,16 @@ internal Task WriteSqlVariantDataRowValue(object value, TdsParserStateObject sta
                 case TdsEnums.SQLTIME:
                     WriteSqlVariantHeader(8, metatype.TDSType, metatype.PropBytes, stateObj);
                     stateObj.WriteByte(metatype.Scale); //propbytes: scale
-                    WriteTime((TimeSpan)value, metatype.Scale, 5, stateObj);
+#if NET
+                    if (value is TimeOnly timeOnly)
+                    {
+                        WriteTime(timeOnly.ToTimeSpan(), metatype.Scale, 5, stateObj);
+                    }
+                    else
+#endif
+                    {
+                        WriteTime((TimeSpan)value, metatype.Scale, 5, stateObj);
+                    }
                     break;
 
                 case TdsEnums.SQLDATETIMEOFFSET:
diff --git a/src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/ParameterTest/DateTimeVariantTests.cs b/src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/ParameterTest/DateTimeVariantTests.cs
index e968295b5a..3c49e1328a 100644
--- a/src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/ParameterTest/DateTimeVariantTests.cs
+++ b/src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/ParameterTest/DateTimeVariantTests.cs
@@ -412,6 +412,10 @@ public void TestSqlDataReader_TVP_Type(
                     {
                         value = ((DateOnly)paramValue).ToString();
                     }
+                    else if (paramValue.GetType() == typeof(TimeOnly))
+                    {
+                        value = ((TimeOnly)paramValue).ToString("O");
+                    }
                     #endif
                     else
                     {
@@ -487,6 +491,10 @@ public void TestSqlDataReader_TVP_Variant(
                     {
                         value = ((DateOnly)paramValue).ToString();
                     }
+                    else if (paramValue.GetType() == typeof(TimeOnly))
+                    {
+                        value = ((TimeOnly)paramValue).ToString("O");
+                    }
                     #endif
                     else
                     {
@@ -559,6 +567,10 @@ public void TestSimpleDataReader_Type(
                     {
                         value = ((DateOnly)paramValue).ToString();
                     }
+                    else if (paramValue.GetType() == typeof(TimeOnly))
+                    {
+                        value = ((TimeOnly)paramValue).ToString("O");
+                    }
                     #endif
                     else
                     {
@@ -616,6 +628,10 @@ public void TestSimpleDataReader_Variant(
                     {
                         value = ((DateOnly)paramValue).ToString();
                     }
+                    else if (paramValue.GetType() == typeof(TimeOnly))
+                    {
+                        value = ((TimeOnly)paramValue).ToString("O");
+                    }
                     #endif
                     else
                     {
@@ -674,6 +690,10 @@ public void SqlBulkCopySqlDataReader_Type(
                     {
                         value = ((DateOnly)paramValue).ToString();
                     }
+                    else if (paramValue.GetType() == typeof(TimeOnly))
+                    {
+                        value = ((TimeOnly)paramValue).ToString("O");
+                    }
                     #endif
                     else
                     {
@@ -747,6 +767,10 @@ public void SqlBulkCopySqlDataReader_Variant(
                     {
                         value = ((DateOnly)paramValue).ToString();
                     }
+                    else if (paramValue.GetType() == typeof(TimeOnly))
+                    {
+                        value = ((TimeOnly)paramValue).ToString("O");
+                    }
                     #endif
                     else
                     {
@@ -1223,6 +1247,53 @@ public static IEnumerable<object[]> GetParameterCombinations()
                     {TestVariations.SqlBulkCopyDataTable_Variant, "datetime"},
                     {TestVariations.SqlBulkCopyDataRow_Variant, "datetime"}
                 }};
+            #if NET
+            yield return new object[] { TimeOnly.MinValue, "time",
+                new Dictionary<TestVariations, ExceptionChecker>(),
+                new Dictionary<TestVariations, object>()
+                {
+                    { TestVariations.TestSimpleParameter_Type, TimeSpan.Zero },
+                    { TestVariations.TestSimpleParameter_Variant, TimeSpan.Zero },
+                    { TestVariations.TestSqlDataRecordParameterToTVP_Type, TimeSpan.Zero },
+                    { TestVariations.TestSqlDataRecordParameterToTVP_Variant, TimeSpan.Zero },
+                    { TestVariations.TestSqlDataReaderParameterToTVP_Type, TimeSpan.Zero },
+                    { TestVariations.TestSqlDataReaderParameterToTVP_Variant, TimeSpan.Zero },
+                    { TestVariations.TestSqlDataReader_TVP_Type, TimeSpan.Zero },
+                    { TestVariations.TestSqlDataReader_TVP_Variant, TimeSpan.Zero },
+                    { TestVariations.TestSimpleDataReader_Type, TimeSpan.Zero },
+                    { TestVariations.TestSimpleDataReader_Variant, TimeSpan.Zero },
+                    { TestVariations.SqlBulkCopySqlDataReader_Type, TimeSpan.Zero },
+                    { TestVariations.SqlBulkCopySqlDataReader_Variant, TimeSpan.Zero },
+                    { TestVariations.SqlBulkCopyDataTable_Type, TimeSpan.Zero },
+                    { TestVariations.SqlBulkCopyDataTable_Variant, TimeSpan.Zero },
+                    { TestVariations.SqlBulkCopyDataRow_Type, TimeSpan.Zero },
+                    { TestVariations.SqlBulkCopyDataRow_Variant, TimeSpan.Zero }
+                },
+                new Dictionary<TestVariations, string>()};
+            yield return new object[] { TimeOnly.MaxValue, "time",
+                new Dictionary<TestVariations, ExceptionChecker>(),
+                new Dictionary<TestVariations, object>()
+                {
+                    { TestVariations.TestSimpleParameter_Type, new TimeSpan(863999999999) },
+                    { TestVariations.TestSimpleParameter_Variant, new TimeSpan(863999999999) },
+                    { TestVariations.TestSqlDataRecordParameterToTVP_Type, new TimeSpan(863999999999) },
+                    { TestVariations.TestSqlDataRecordParameterToTVP_Variant, new TimeSpan(863999999999) },
+                    { TestVariations.TestSqlDataReaderParameterToTVP_Type, new TimeSpan(863999999999) },
+                    { TestVariations.TestSqlDataReaderParameterToTVP_Variant, new TimeSpan(863999999999) },
+                    { TestVariations.TestSqlDataReader_TVP_Type, new TimeSpan(863999999999) },
+                    { TestVariations.TestSqlDataReader_TVP_Variant, new TimeSpan(863999999999) },
+                    { TestVariations.TestSimpleDataReader_Type, new TimeSpan(863999999999) },
+                    { TestVariations.TestSimpleDataReader_Variant, new TimeSpan(863999999999) },
+                    { TestVariations.SqlBulkCopySqlDataReader_Type, new TimeSpan(863999999999) },
+                    { TestVariations.SqlBulkCopySqlDataReader_Variant, new TimeSpan(863999999999) },
+                    { TestVariations.SqlBulkCopyDataTable_Type, new TimeSpan(863999999999) },
+                    { TestVariations.SqlBulkCopyDataTable_Variant, new TimeSpan(863999999999) },
+                    { TestVariations.SqlBulkCopyDataRow_Type, new TimeSpan(863999999999) },
+                    { TestVariations.SqlBulkCopyDataRow_Variant, new TimeSpan(863999999999) }
+                },
+                new Dictionary<TestVariations, string>()
+            };
+            #endif
             yield return new object[] { TimeSpan.MinValue, "time",
                 new Dictionary<TestVariations, ExceptionChecker> {
                     { TestVariations.TestSimpleParameter_Type, TimeOverflow },
@@ -1244,6 +1315,10 @@ public static IEnumerable<object[]> GetParameterCombinations()
                     {TestVariations.TestSqlDataRecordParameterToTVP_Variant, TimeSpan.Zero},
                 },
                 new Dictionary<TestVariations, string>()};
+            yield return new object[] { TimeSpan.FromSeconds(1.0), "time",
+                new Dictionary<TestVariations, ExceptionChecker>(),
+                new Dictionary<TestVariations, object>(),
+                new Dictionary<TestVariations, string>()};
             yield return new object[] { TimeSpan.MaxValue, "time",
                 new Dictionary<TestVariations, ExceptionChecker> {
                     { TestVariations.TestSimpleParameter_Type, TimeOverflow },