diff --git a/buffered_writer.zig b/buffered_writer.zig
new file mode 100644
index 0000000000000000000000000000000000000000..f8ab659237a08544444cdbac8a28e82ea8e74e26
--- /dev/null
+++ b/buffered_writer.zig
@@ -0,0 +1,51 @@
+const std = @import("std");
+const nio = @import("./nio.zig");
+
+pub fn BufferedWriter(comptime buffer_size: usize, comptime WriterType: type) type {
+    return struct {
+        unbuffered_writer: WriterType,
+        buf: [buffer_size]u8,
+        end: usize,
+
+        const Self = @This();
+
+        pub fn init(unbuffered_writer: WriterType) Self {
+            return .{
+                .unbuffered_writer = unbuffered_writer,
+                .buf = undefined,
+                .end = 0,
+            };
+        }
+
+        pub const WriteError = WriterType.WriteError;
+        pub usingnamespace nio.Writable(@This(), ._var);
+        pub fn write(self: *Self, bytes: []const u8) WriteError!usize {
+            if (self.end + bytes.len > self.buf.len) {
+                try self.flush();
+                if (bytes.len > self.buf.len) return self.unbuffered_writer.write(bytes);
+            }
+            const new_end = self.end + bytes.len;
+            @memcpy(self.buf[self.end..new_end], bytes);
+            self.end = new_end;
+            return bytes.len;
+        }
+
+        pub fn anyWritable(self: *Self) nio.AnyWritable {
+            const S = struct {
+                fn write(s: *allowzero anyopaque, buffer: []u8) anyerror!usize {
+                    const bw: *Self = @ptrCast(@alignCast(s));
+                    return bw.write(buffer);
+                }
+            };
+            return .{
+                .vtable = &.{ .write = S.write },
+                .state = @ptrCast(self),
+            };
+        }
+
+        pub fn flush(self: *Self) !void {
+            try self.unbuffered_writer.writeAll(self.buf[0..self.end]);
+            self.end = 0;
+        }
+    };
+}
diff --git a/nio.zig b/nio.zig
index b1c891a2855c8f87eb4d9af28faeddc0d3a44010..967812ece8acf8f6553a871bc4ddcd104664d97a 100644
--- a/nio.zig
+++ b/nio.zig
@@ -141,3 +141,5 @@ pub const AnyWritable = @import("./AnyWritable.zig");
 pub const FixedBufferStream = @import("./fixed_buffer_stream.zig").FixedBufferStream;
 
 pub const BufferedReader = @import("./buffered_reader.zig").BufferedReader;
+
+pub const BufferedWriter = @import("./buffered_writer.zig").BufferedWriter;