diff --git a/py-polars/polars/_utils/construction/dataframe.py b/py-polars/polars/_utils/construction/dataframe.py
index 81f100b12ffd..4e231e7a5028 100644
--- a/py-polars/polars/_utils/construction/dataframe.py
+++ b/py-polars/polars/_utils/construction/dataframe.py
@@ -555,7 +555,7 @@ def _sequence_of_sequence_to_pydf(
         if unpack_nested:
             dicts = [nt_unpack(d) for d in data]
             pydf = PyDataFrame.from_dicts(
-                dicts, infer_schema_length=infer_schema_length
+                dicts, strict=strict, infer_schema_length=infer_schema_length
             )
         else:
             pydf = PyDataFrame.from_rows(
@@ -675,6 +675,7 @@ def _sequence_of_dict_to_pydf(
         data,
         dicts_schema,
         schema_overrides,
+        strict=strict,
         infer_schema_length=infer_schema_length,
     )
 
@@ -774,7 +775,9 @@ def _sequence_of_dataclasses_to_pydf(
     )
     if unpack_nested:
         dicts = [asdict(md) for md in data]
-        pydf = PyDataFrame.from_dicts(dicts, infer_schema_length=infer_schema_length)
+        pydf = PyDataFrame.from_dicts(
+            dicts, strict=strict, infer_schema_length=infer_schema_length
+        )
     else:
         rows = [astuple(dc) for dc in data]
         pydf = PyDataFrame.from_rows(
@@ -823,7 +826,9 @@ def _sequence_of_pydantic_models_to_pydf(
             if old_pydantic
             else [md.model_dump(mode="python") for md in data]
         )
-        pydf = PyDataFrame.from_dicts(dicts, infer_schema_length=infer_schema_length)
+        pydf = PyDataFrame.from_dicts(
+            dicts, strict=strict, infer_schema_length=infer_schema_length
+        )
 
     elif len(model_fields) > 50:
         # 'from_rows' is the faster codepath for models with a lot of fields...
@@ -836,7 +841,10 @@ def _sequence_of_pydantic_models_to_pydf(
         # ...and 'from_dicts' is faster otherwise
         dicts = [md.__dict__ for md in data]
         pydf = PyDataFrame.from_dicts(
-            dicts, schema=overrides, infer_schema_length=infer_schema_length
+            dicts,
+            schema=overrides,
+            strict=strict,
+            infer_schema_length=infer_schema_length,
         )
 
     if overrides:
diff --git a/py-polars/src/dataframe/construction.rs b/py-polars/src/dataframe/construction.rs
index d3cd40bc1e0b..723d02919af5 100644
--- a/py-polars/src/dataframe/construction.rs
+++ b/py-polars/src/dataframe/construction.rs
@@ -21,19 +21,20 @@ impl PyDataFrame {
     }
 
     #[staticmethod]
-    #[pyo3(signature = (data, schema=None, schema_overrides=None, infer_schema_length=None))]
+    #[pyo3(signature = (data, schema=None, schema_overrides=None, strict=true, infer_schema_length=None))]
     pub fn from_dicts(
         py: Python,
         data: &PyAny,
         schema: Option<Wrap<Schema>>,
         schema_overrides: Option<Wrap<Schema>>,
+        strict: bool,
         infer_schema_length: Option<usize>,
     ) -> PyResult<Self> {
         let schema = schema.map(|wrap| wrap.0);
         let schema_overrides = schema_overrides.map(|wrap| wrap.0);
 
         let names = get_schema_names(data, schema.as_ref(), infer_schema_length)?;
-        let rows = dicts_to_rows(data, &names)?;
+        let rows = dicts_to_rows(data, &names, strict)?;
 
         let schema = schema.or_else(|| {
             Some(columns_names_to_empty_schema(
@@ -134,7 +135,7 @@ where
     Schema::from_iter(fields)
 }
 
-fn dicts_to_rows<'a>(data: &'a PyAny, names: &'a [String]) -> PyResult<Vec<Row<'a>>> {
+fn dicts_to_rows<'a>(data: &'a PyAny, names: &'a [String], strict: bool) -> PyResult<Vec<Row<'a>>> {
     let len = data.len()?;
     let mut rows = Vec::with_capacity(len);
     for d in data.iter()? {
@@ -145,9 +146,7 @@ fn dicts_to_rows<'a>(data: &'a PyAny, names: &'a [String]) -> PyResult<Vec<Row<'
         for k in names.iter() {
             let val = match d.get_item(k)? {
                 None => AnyValue::Null,
-                // TODO: Propagate strictness here.
-                // https://github.com/pola-rs/polars/issues/14427
-                Some(val) => py_object_to_any_value(val, false)?,
+                Some(val) => py_object_to_any_value(val, strict)?,
             };
             row.push(val)
         }