diff --git a/rust/arrow/src/memory.rs b/rust/arrow/src/memory.rs
index d73ddd11676c8..c941d34bfec16 100644
--- a/rust/arrow/src/memory.rs
+++ b/rust/arrow/src/memory.rs
@@ -51,7 +51,6 @@ pub unsafe fn memcpy(dst: *mut u8, src: *const u8, len: usize) {
 }
 
 extern "C" {
-    #[inline]
     pub fn memcmp(p1: *const u8, p2: *const u8, len: usize) -> i32;
 }
 
diff --git a/rust/parquet/src/encodings/decoding.rs b/rust/parquet/src/encodings/decoding.rs
index 7dc97b65cf94b..453d91cae83ad 100644
--- a/rust/parquet/src/encodings/decoding.rs
+++ b/rust/parquet/src/encodings/decoding.rs
@@ -657,10 +657,8 @@ impl<T: DataType> Decoder<T> for DeltaBitPackDecoder<T> {
 /// Helper trait to define specific conversions when decoding values
 trait DeltaBitPackDecoderConversion<T: DataType> {
     /// Sets decoded value based on type `T`.
-    #[inline]
     fn get_delta(&self, index: usize) -> i64;
 
-    #[inline]
     fn set_decoded_value(&self, buffer: &mut [T::T], index: usize, value: i64);
 }
 
diff --git a/rust/parquet/src/encodings/encoding.rs b/rust/parquet/src/encodings/encoding.rs
index 5aae81d242f42..c9cad12e42d6a 100644
--- a/rust/parquet/src/encodings/encoding.rs
+++ b/rust/parquet/src/encodings/encoding.rs
@@ -417,7 +417,6 @@ impl<T: DataType> Encoder<T> for DictEncoder<T> {
 /// Provides encoded size for a data type.
 /// This is a workaround to calculate dictionary size in bytes.
 trait DictEncodedSize<T: DataType> {
-    #[inline]
     fn get_encoded_size(&self, value: &T::T) -> usize;
 }
 
@@ -752,16 +751,12 @@ impl<T: DataType> Encoder<T> for DeltaBitPackEncoder<T> {
 /// Helper trait to define specific conversions and subtractions when computing deltas
 trait DeltaBitPackEncoderConversion<T: DataType> {
     // Method should panic if type is not supported, otherwise no-op
-    #[inline]
     fn assert_supported_type();
 
-    #[inline]
     fn as_i64(&self, values: &[T::T], index: usize) -> i64;
 
-    #[inline]
     fn subtract(&self, left: i64, right: i64) -> i64;
 
-    #[inline]
     fn subtract_u64(&self, left: i64, right: i64) -> u64;
 }