diff --git a/packages/kbn-esql-validation-autocomplete/src/definitions/functions.ts b/packages/kbn-esql-validation-autocomplete/src/definitions/functions.ts
index a548287683e5c..c627bc0a62176 100644
--- a/packages/kbn-esql-validation-autocomplete/src/definitions/functions.ts
+++ b/packages/kbn-esql-validation-autocomplete/src/definitions/functions.ts
@@ -4145,6 +4145,160 @@ const mvMinDefinition: FunctionDefinition = {
   ],
 };
 
+// Do not edit this manually... generated by scripts/generate_function_definitions.ts
+const mvPercentileDefinition: FunctionDefinition = {
+  type: 'eval',
+  name: 'mv_percentile',
+  description: i18n.translate('kbn-esql-validation-autocomplete.esql.definitions.mv_percentile', {
+    defaultMessage:
+      'Converts a multivalued field into a single valued field containing the value at which a certain percentage of observed values occur.',
+  }),
+  alias: undefined,
+  signatures: [
+    {
+      params: [
+        {
+          name: 'number',
+          type: 'double',
+          optional: false,
+        },
+        {
+          name: 'percentile',
+          type: 'double',
+          optional: false,
+        },
+      ],
+      returnType: 'double',
+    },
+    {
+      params: [
+        {
+          name: 'number',
+          type: 'double',
+          optional: false,
+        },
+        {
+          name: 'percentile',
+          type: 'integer',
+          optional: false,
+        },
+      ],
+      returnType: 'double',
+    },
+    {
+      params: [
+        {
+          name: 'number',
+          type: 'double',
+          optional: false,
+        },
+        {
+          name: 'percentile',
+          type: 'long',
+          optional: false,
+        },
+      ],
+      returnType: 'double',
+    },
+    {
+      params: [
+        {
+          name: 'number',
+          type: 'integer',
+          optional: false,
+        },
+        {
+          name: 'percentile',
+          type: 'double',
+          optional: false,
+        },
+      ],
+      returnType: 'integer',
+    },
+    {
+      params: [
+        {
+          name: 'number',
+          type: 'integer',
+          optional: false,
+        },
+        {
+          name: 'percentile',
+          type: 'integer',
+          optional: false,
+        },
+      ],
+      returnType: 'integer',
+    },
+    {
+      params: [
+        {
+          name: 'number',
+          type: 'integer',
+          optional: false,
+        },
+        {
+          name: 'percentile',
+          type: 'long',
+          optional: false,
+        },
+      ],
+      returnType: 'integer',
+    },
+    {
+      params: [
+        {
+          name: 'number',
+          type: 'long',
+          optional: false,
+        },
+        {
+          name: 'percentile',
+          type: 'double',
+          optional: false,
+        },
+      ],
+      returnType: 'long',
+    },
+    {
+      params: [
+        {
+          name: 'number',
+          type: 'long',
+          optional: false,
+        },
+        {
+          name: 'percentile',
+          type: 'integer',
+          optional: false,
+        },
+      ],
+      returnType: 'long',
+    },
+    {
+      params: [
+        {
+          name: 'number',
+          type: 'long',
+          optional: false,
+        },
+        {
+          name: 'percentile',
+          type: 'long',
+          optional: false,
+        },
+      ],
+      returnType: 'long',
+    },
+  ],
+  supportedCommands: ['stats', 'inlinestats', 'metrics', 'eval', 'where', 'row', 'sort'],
+  supportedOptions: ['by'],
+  validate: undefined,
+  examples: [
+    'ROW values = [5, 5, 10, 12, 5000]\n| EVAL p50 = MV_PERCENTILE(values, 50), median = MV_MEDIAN(values)',
+  ],
+};
+
 // Do not edit this manually... generated by scripts/generate_function_definitions.ts
 const mvPseriesWeightedSumDefinition: FunctionDefinition = {
   type: 'eval',
@@ -8323,6 +8477,7 @@ export const evalFunctionDefinitions = [
   mvMaxDefinition,
   mvMedianDefinition,
   mvMinDefinition,
+  mvPercentileDefinition,
   mvPseriesWeightedSumDefinition,
   mvSliceDefinition,
   mvSortDefinition,
diff --git a/packages/kbn-esql-validation-autocomplete/src/validation/validation.test.ts b/packages/kbn-esql-validation-autocomplete/src/validation/validation.test.ts
index bd1de77be408a..f67c7d120fcd3 100644
--- a/packages/kbn-esql-validation-autocomplete/src/validation/validation.test.ts
+++ b/packages/kbn-esql-validation-autocomplete/src/validation/validation.test.ts
@@ -15879,6 +15879,171 @@ describe('validation logic', () => {
           []
         );
       });
+
+      describe('mv_percentile', () => {
+        testErrorsAndWarnings('row var = mv_percentile(5.5, 5.5)', []);
+        testErrorsAndWarnings('row mv_percentile(5.5, 5.5)', []);
+        testErrorsAndWarnings('row var = mv_percentile(to_double(true), to_double(true))', []);
+        testErrorsAndWarnings('row var = mv_percentile(5.5, 5)', []);
+        testErrorsAndWarnings('row mv_percentile(5.5, 5)', []);
+        testErrorsAndWarnings('row var = mv_percentile(to_double(true), to_integer(true))', []);
+        testErrorsAndWarnings('row var = mv_percentile(to_double(true), 5)', []);
+        testErrorsAndWarnings('row var = mv_percentile(5, 5.5)', []);
+        testErrorsAndWarnings('row mv_percentile(5, 5.5)', []);
+        testErrorsAndWarnings('row var = mv_percentile(to_integer(true), to_double(true))', []);
+        testErrorsAndWarnings('row var = mv_percentile(5, 5)', []);
+        testErrorsAndWarnings('row mv_percentile(5, 5)', []);
+        testErrorsAndWarnings('row var = mv_percentile(to_integer(true), to_integer(true))', []);
+        testErrorsAndWarnings('row var = mv_percentile(to_integer(true), 5)', []);
+        testErrorsAndWarnings('row var = mv_percentile(5, to_double(true))', []);
+        testErrorsAndWarnings('row var = mv_percentile(5, to_integer(true))', []);
+
+        testErrorsAndWarnings('row var = mv_percentile(true, true)', [
+          'Argument of [mv_percentile] must be [double], found value [true] type [boolean]',
+          'Argument of [mv_percentile] must be [double], found value [true] type [boolean]',
+        ]);
+
+        testErrorsAndWarnings(
+          'from a_index | where mv_percentile(doubleField, doubleField) > 0',
+          []
+        );
+
+        testErrorsAndWarnings(
+          'from a_index | where mv_percentile(booleanField, booleanField) > 0',
+          [
+            'Argument of [mv_percentile] must be [double], found value [booleanField] type [boolean]',
+            'Argument of [mv_percentile] must be [double], found value [booleanField] type [boolean]',
+          ]
+        );
+
+        testErrorsAndWarnings(
+          'from a_index | where mv_percentile(doubleField, integerField) > 0',
+          []
+        );
+        testErrorsAndWarnings('from a_index | where mv_percentile(doubleField, longField) > 0', []);
+        testErrorsAndWarnings(
+          'from a_index | where mv_percentile(integerField, doubleField) > 0',
+          []
+        );
+        testErrorsAndWarnings(
+          'from a_index | where mv_percentile(integerField, integerField) > 0',
+          []
+        );
+        testErrorsAndWarnings(
+          'from a_index | where mv_percentile(integerField, longField) > 0',
+          []
+        );
+        testErrorsAndWarnings('from a_index | where mv_percentile(longField, doubleField) > 0', []);
+        testErrorsAndWarnings(
+          'from a_index | where mv_percentile(longField, integerField) > 0',
+          []
+        );
+        testErrorsAndWarnings('from a_index | where mv_percentile(longField, longField) > 0', []);
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(doubleField, doubleField)',
+          []
+        );
+        testErrorsAndWarnings('from a_index | eval mv_percentile(doubleField, doubleField)', []);
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(to_double(booleanField), to_double(booleanField))',
+          []
+        );
+
+        testErrorsAndWarnings('from a_index | eval mv_percentile(booleanField, booleanField)', [
+          'Argument of [mv_percentile] must be [double], found value [booleanField] type [boolean]',
+          'Argument of [mv_percentile] must be [double], found value [booleanField] type [boolean]',
+        ]);
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(doubleField, integerField)',
+          []
+        );
+        testErrorsAndWarnings('from a_index | eval mv_percentile(doubleField, integerField)', []);
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(to_double(booleanField), to_integer(booleanField))',
+          []
+        );
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(doubleField, longField)',
+          []
+        );
+        testErrorsAndWarnings('from a_index | eval mv_percentile(doubleField, longField)', []);
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(to_double(booleanField), longField)',
+          []
+        );
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(integerField, doubleField)',
+          []
+        );
+        testErrorsAndWarnings('from a_index | eval mv_percentile(integerField, doubleField)', []);
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(to_integer(booleanField), to_double(booleanField))',
+          []
+        );
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(integerField, integerField)',
+          []
+        );
+        testErrorsAndWarnings('from a_index | eval mv_percentile(integerField, integerField)', []);
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(to_integer(booleanField), to_integer(booleanField))',
+          []
+        );
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(integerField, longField)',
+          []
+        );
+        testErrorsAndWarnings('from a_index | eval mv_percentile(integerField, longField)', []);
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(to_integer(booleanField), longField)',
+          []
+        );
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(longField, doubleField)',
+          []
+        );
+        testErrorsAndWarnings('from a_index | eval mv_percentile(longField, doubleField)', []);
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(longField, to_double(booleanField))',
+          []
+        );
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(longField, integerField)',
+          []
+        );
+        testErrorsAndWarnings('from a_index | eval mv_percentile(longField, integerField)', []);
+
+        testErrorsAndWarnings(
+          'from a_index | eval var = mv_percentile(longField, to_integer(booleanField))',
+          []
+        );
+
+        testErrorsAndWarnings('from a_index | eval var = mv_percentile(longField, longField)', []);
+        testErrorsAndWarnings('from a_index | eval mv_percentile(longField, longField)', []);
+
+        testErrorsAndWarnings(
+          'from a_index | eval mv_percentile(doubleField, doubleField, extraArg)',
+          ['Error: [mv_percentile] function expects exactly 2 arguments, got 3.']
+        );
+
+        testErrorsAndWarnings('from a_index | sort mv_percentile(doubleField, doubleField)', []);
+        testErrorsAndWarnings('from a_index | eval mv_percentile(null, null)', []);
+        testErrorsAndWarnings('row nullVar = null | eval mv_percentile(nullVar, nullVar)', []);
+      });
     });
   });
 
diff --git a/packages/kbn-text-based-editor/src/esql_documentation_sections.tsx b/packages/kbn-text-based-editor/src/esql_documentation_sections.tsx
index 05cb7b452c18b..9976078804819 100644
--- a/packages/kbn-text-based-editor/src/esql_documentation_sections.tsx
+++ b/packages/kbn-text-based-editor/src/esql_documentation_sections.tsx
@@ -2176,6 +2176,39 @@ export const functions = {
   ROW a=[2, 1]
   | EVAL min_a = MV_MIN(a)
   \`\`\`
+  `,
+              description:
+                'Text is in markdown. Do not translate function names, special characters, or field names like sum(bytes)',
+              ignoreTag: true,
+            }
+          )}
+        />
+      ),
+    },
+    // Do not edit manually... automatically generated by scripts/generate_esql_docs.ts
+    {
+      label: i18n.translate(
+        'textBasedEditor.query.textBasedLanguagesEditor.documentationESQL.mv_percentile',
+        {
+          defaultMessage: 'MV_PERCENTILE',
+        }
+      ),
+      description: (
+        <Markdown
+          markdownContent={i18n.translate(
+            'textBasedEditor.query.textBasedLanguagesEditor.documentationESQL.mv_percentile.markdown',
+            {
+              defaultMessage: `<!--
+  This is generated by ESQL's AbstractFunctionTestCase. Do no edit it. See ../README.md for how to regenerate it.
+  -->
+
+  ### MV_PERCENTILE
+  Converts a multivalued field into a single valued field containing the value at which a certain percentage of observed values occur.
+
+  \`\`\`
+  ROW values = [5, 5, 10, 12, 5000]
+  | EVAL p50 = MV_PERCENTILE(values, 50), median = MV_MEDIAN(values)
+  \`\`\`
   `,
               description:
                 'Text is in markdown. Do not translate function names, special characters, or field names like sum(bytes)',
@@ -3370,6 +3403,7 @@ export const functions = {
   ROW string = ["1953-09-02T00:00:00.000Z", "1964-06-02T00:00:00.000Z", "1964-06-02 00:00:00"]
   | EVAL datetime = TO_DATETIME(string)
   \`\`\`
+  Note: Note that when converting from nanosecond resolution to millisecond resolution with this function, the nanosecond date is truncated, not rounded.
   `,
               description:
                 'Text is in markdown. Do not translate function names, special characters, or field names like sum(bytes)',