diff --git a/arrow-array/src/ffi_stream.rs b/arrow-array/src/ffi_stream.rs
index 0d4a3f3b39a..3d4e89e80b8 100644
--- a/arrow-array/src/ffi_stream.rs
+++ b/arrow-array/src/ffi_stream.rs
@@ -379,21 +379,6 @@ impl RecordBatchReader for ArrowArrayStreamReader {
     }
 }
 
-/// Exports a record batch reader to raw pointer of the C Stream Interface provided by the consumer.
-///
-/// # Safety
-/// Assumes that the pointer represents valid C Stream Interfaces, both in memory
-/// representation and lifetime via the `release` mechanism.
-#[deprecated(since = "50.0.0", note = "Use FFI_ArrowArrayStream::new")]
-pub unsafe fn export_reader_into_raw(
-    reader: Box<dyn RecordBatchReader + Send>,
-    out_stream: *mut FFI_ArrowArrayStream,
-) {
-    let stream = FFI_ArrowArrayStream::new(reader);
-
-    std::ptr::write_unaligned(out_stream, stream);
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;
diff --git a/arrow-buffer/src/buffer/immutable.rs b/arrow-buffer/src/buffer/immutable.rs
index dc0de7736bd..d0c8ffa3978 100644
--- a/arrow-buffer/src/buffer/immutable.rs
+++ b/arrow-buffer/src/buffer/immutable.rs
@@ -20,7 +20,7 @@ use std::fmt::Debug;
 use std::ptr::NonNull;
 use std::sync::Arc;
 
-use crate::alloc::{Allocation, Deallocation, ALIGNMENT};
+use crate::alloc::{Allocation, Deallocation};
 use crate::util::bit_chunk_iterator::{BitChunks, UnalignedBitChunk};
 use crate::BufferBuilder;
 use crate::{bit_util, bytes::Bytes, native::ArrowNativeType};
@@ -99,26 +99,6 @@ impl Buffer {
         buffer.into()
     }
 
-    /// Creates a buffer from an existing aligned memory region (must already be byte-aligned), this
-    /// `Buffer` will free this piece of memory when dropped.
-    ///
-    /// # Arguments
-    ///
-    /// * `ptr` - Pointer to raw parts
-    /// * `len` - Length of raw parts in **bytes**
-    /// * `capacity` - Total allocated memory for the pointer `ptr`, in **bytes**
-    ///
-    /// # Safety
-    ///
-    /// This function is unsafe as there is no guarantee that the given pointer is valid for `len`
-    /// bytes. If the `ptr` and `capacity` come from a `Buffer`, then this is guaranteed.
-    #[deprecated(since = "50.0.0", note = "Use Buffer::from_vec")]
-    pub unsafe fn from_raw_parts(ptr: NonNull<u8>, len: usize, capacity: usize) -> Self {
-        assert!(len <= capacity);
-        let layout = Layout::from_size_align(capacity, ALIGNMENT).unwrap();
-        Buffer::build_with_arguments(ptr, len, Deallocation::Standard(layout))
-    }
-
     /// Creates a buffer from an existing memory region. Ownership of the memory is tracked via reference counting
     /// and the memory will be freed using the `drop` method of [crate::alloc::Allocation] when the reference count reaches zero.
     ///
@@ -322,6 +302,8 @@ impl Buffer {
     /// Returns `MutableBuffer` for mutating the buffer if this buffer is not shared.
     /// Returns `Err` if this is shared or its allocation is from an external source or
     /// it is not allocated with alignment [`ALIGNMENT`]
+    ///
+    /// [`ALIGNMENT`]: crate::alloc::ALIGNMENT
     pub fn into_mutable(self) -> Result<MutableBuffer, Self> {
         let ptr = self.ptr;
         let length = self.length;
diff --git a/arrow-schema/src/fields.rs b/arrow-schema/src/fields.rs
index b4c4d4e59ec..904b933cd29 100644
--- a/arrow-schema/src/fields.rs
+++ b/arrow-schema/src/fields.rs
@@ -18,7 +18,7 @@
 use std::ops::Deref;
 use std::sync::Arc;
 
-use crate::{ArrowError, DataType, Field, FieldRef, SchemaBuilder};
+use crate::{ArrowError, DataType, Field, FieldRef};
 
 /// A cheaply cloneable, owned slice of [`FieldRef`]
 ///
@@ -256,33 +256,6 @@ impl Fields {
             .collect();
         Ok(filtered)
     }
-
-    /// Remove a field by index and return it.
-    ///
-    /// # Panic
-    ///
-    /// Panics if `index` is out of bounds.
-    ///
-    /// # Example
-    /// ```
-    /// use arrow_schema::{DataType, Field, Fields};
-    /// let mut fields = Fields::from(vec![
-    ///   Field::new("a", DataType::Boolean, false),
-    ///   Field::new("b", DataType::Int8, false),
-    ///   Field::new("c", DataType::Utf8, false),
-    /// ]);
-    /// assert_eq!(fields.len(), 3);
-    /// assert_eq!(fields.remove(1), Field::new("b", DataType::Int8, false).into());
-    /// assert_eq!(fields.len(), 2);
-    /// ```
-    #[deprecated(since = "50.0.0", note = "Use SchemaBuilder::remove")]
-    #[doc(hidden)]
-    pub fn remove(&mut self, index: usize) -> FieldRef {
-        let mut builder = SchemaBuilder::from(Fields::from(&*self.0));
-        let field = builder.remove(index);
-        *self = builder.finish().fields;
-        field
-    }
 }
 
 impl Default for Fields {
diff --git a/arrow-schema/src/schema.rs b/arrow-schema/src/schema.rs
index c5c22b52713..47c22e2a931 100644
--- a/arrow-schema/src/schema.rs
+++ b/arrow-schema/src/schema.rs
@@ -434,33 +434,6 @@ impl Schema {
                 .iter()
                 .all(|(k, v1)| self.metadata.get(k).map(|v2| v1 == v2).unwrap_or_default())
     }
-
-    /// Remove field by index and return it. Recommend to use [`SchemaBuilder`]
-    /// if you are looking to remove multiple columns, as this will save allocations.
-    ///
-    /// # Panic
-    ///
-    /// Panics if `index` is out of bounds.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use arrow_schema::{DataType, Field, Schema};
-    /// let mut schema = Schema::new(vec![
-    ///   Field::new("a", DataType::Boolean, false),
-    ///   Field::new("b", DataType::Int8, false),
-    ///   Field::new("c", DataType::Utf8, false),
-    /// ]);
-    /// assert_eq!(schema.fields.len(), 3);
-    /// assert_eq!(schema.remove(1), Field::new("b", DataType::Int8, false).into());
-    /// assert_eq!(schema.fields.len(), 2);
-    /// ```
-    #[deprecated(since = "50.0.0", note = "Use SchemaBuilder::remove")]
-    #[doc(hidden)]
-    #[allow(deprecated)]
-    pub fn remove(&mut self, index: usize) -> FieldRef {
-        self.fields.remove(index)
-    }
 }
 
 impl fmt::Display for Schema {