diff --git a/.changeset/tasty-bananas-impress.md b/.changeset/tasty-bananas-impress.md
new file mode 100644
index 00000000000..62c0a098aa6
--- /dev/null
+++ b/.changeset/tasty-bananas-impress.md
@@ -0,0 +1,7 @@
+---
+"@fuel-ts/docs-snippets": patch
+"@fuel-ts/abi-typegen": patch
+"@fuel-ts/interfaces": patch
+---
+
+Improve typegen support for String, RawSlice and Bytes
diff --git a/apps/docs-snippets/src/guide/types/bytes.test.ts b/apps/docs-snippets/src/guide/types/bytes.test.ts
index c599da17775..eb054d9361f 100644
--- a/apps/docs-snippets/src/guide/types/bytes.test.ts
+++ b/apps/docs-snippets/src/guide/types/bytes.test.ts
@@ -1,4 +1,4 @@
-import type { Contract } from 'fuels';
+import type { Contract, Bytes } from 'fuels';
 
 import { SnippetProjectEnum } from '../../../projects';
 import { createAndDeployContractFromProject } from '../../utils';
@@ -12,8 +12,9 @@ describe('Bytes', () => {
 
   it('should pass bytes to a contract', async () => {
     // #region bytes-1
+    // #context import type { Bytes } from 'fuels';
 
-    const bytes = [40, 41, 42];
+    const bytes: Bytes = [40, 41, 42];
 
     const { value } = await contract.functions.bytes_comparison(bytes).simulate();
 
@@ -23,8 +24,9 @@ describe('Bytes', () => {
 
   it('should retrieve bytes from a contract', async () => {
     // #region bytes-2
+    // #context import type { Bytes } from 'fuels';
 
-    const bytes = [8, 42, 77];
+    const bytes: Bytes = [8, 42, 77];
 
     const { value } = await contract.functions.echo_bytes(bytes).simulate();
 
diff --git a/apps/docs-snippets/src/guide/types/raw-slice.test.ts b/apps/docs-snippets/src/guide/types/raw-slice.test.ts
index d9325d826c0..a6afefcb19d 100644
--- a/apps/docs-snippets/src/guide/types/raw-slice.test.ts
+++ b/apps/docs-snippets/src/guide/types/raw-slice.test.ts
@@ -1,4 +1,4 @@
-import type { Contract, BN } from 'fuels';
+import type { Contract, BN, RawSlice } from 'fuels';
 
 import { SnippetProjectEnum } from '../../../projects';
 import { createAndDeployContractFromProject } from '../../utils';
@@ -12,8 +12,9 @@ describe('RawSlice', () => {
 
   it('should pass a raw slice to a contract', async () => {
     // #region raw-slice-1
+    // #context import type { RawSlice } from 'fuels';
 
-    const rawSlice = [40, 41, 42];
+    const rawSlice: RawSlice = [40, 41, 42];
 
     const { value } = await contract.functions.raw_slice_comparison(rawSlice).simulate();
 
@@ -23,8 +24,9 @@ describe('RawSlice', () => {
 
   it('should retrieve a raw slice from a contract', async () => {
     // #region raw-slice-2
+    // #context import type { RawSlice } from 'fuels';
 
-    const rawSlice = [8, 42, 77];
+    const rawSlice: RawSlice = [8, 42, 77];
 
     const { value } = await contract.functions.echo_raw_slice(rawSlice).simulate();
 
diff --git a/apps/docs-snippets/src/guide/types/std-string.test.ts b/apps/docs-snippets/src/guide/types/std-string.test.ts
index 1956da0d9e4..13f1d5f7da2 100644
--- a/apps/docs-snippets/src/guide/types/std-string.test.ts
+++ b/apps/docs-snippets/src/guide/types/std-string.test.ts
@@ -1,4 +1,4 @@
-import type { Contract } from 'fuels';
+import type { Contract, StdString } from 'fuels';
 
 import { SnippetProjectEnum } from '../../../projects';
 import { createAndDeployContractFromProject } from '../../utils';
@@ -12,8 +12,9 @@ describe('StdString', () => {
 
   it('should pass a std string to a contract', async () => {
     // #region std-string-1
+    // #context import type { StdString } from 'fuels';
 
-    const stdString = 'Hello World';
+    const stdString: StdString = 'Hello World';
 
     const { value } = await contract.functions.string_comparison(stdString).simulate();
 
@@ -23,8 +24,9 @@ describe('StdString', () => {
 
   it('should retrieve a std string from a contract', async () => {
     // #region std-string-2
+    // #context import type { StdString } from 'fuels';
 
-    const stdString = 'Hello Fuel';
+    const stdString: StdString = 'Hello Fuel';
 
     const { value } = await contract.functions.echo_string(stdString).simulate();
 
diff --git a/packages/abi-typegen/src/abi/types/BytesType.test.ts b/packages/abi-typegen/src/abi/types/BytesType.test.ts
index 53bdc0bf724..7d081332d1a 100644
--- a/packages/abi-typegen/src/abi/types/BytesType.test.ts
+++ b/packages/abi-typegen/src/abi/types/BytesType.test.ts
@@ -22,6 +22,6 @@ describe('BytesType.ts', () => {
 
     expect(bytes.attributes.inputLabel).toEqual('Bytes');
     expect(bytes.attributes.outputLabel).toEqual('Bytes');
-    expect(bytes.requiredFuelsMembersImports).toStrictEqual([]);
+    expect(bytes.requiredFuelsMembersImports).toStrictEqual(['Bytes']);
   });
 });
diff --git a/packages/abi-typegen/src/abi/types/BytesType.ts b/packages/abi-typegen/src/abi/types/BytesType.ts
index 3f01708b7e9..92e22b219db 100644
--- a/packages/abi-typegen/src/abi/types/BytesType.ts
+++ b/packages/abi-typegen/src/abi/types/BytesType.ts
@@ -14,10 +14,15 @@ export class BytesType extends ArrayType {
   }
 
   public parseComponentsAttributes(_params: { types: IType[] }) {
+    const capitalizedName = 'Bytes';
+
     this.attributes = {
-      inputLabel: `Bytes`,
-      outputLabel: `Bytes`,
+      inputLabel: capitalizedName,
+      outputLabel: capitalizedName,
     };
+
+    this.requiredFuelsMembersImports = [capitalizedName];
+
     return this.attributes;
   }
 }
diff --git a/packages/abi-typegen/src/abi/types/RawUntypedSlice.test.ts b/packages/abi-typegen/src/abi/types/RawUntypedSlice.test.ts
index 24ca40d3bcc..dff7d7121cf 100644
--- a/packages/abi-typegen/src/abi/types/RawUntypedSlice.test.ts
+++ b/packages/abi-typegen/src/abi/types/RawUntypedSlice.test.ts
@@ -20,8 +20,8 @@ describe('RawUntypedSlice.ts', () => {
     expect(suitableForRawUntyped).toEqual(true);
     expect(suitableForStruct).toEqual(false);
 
-    expect(rawSlice.attributes.inputLabel).toEqual('RawUntypedSlice');
-    expect(rawSlice.attributes.outputLabel).toEqual('RawUntypedSlice');
-    expect(rawSlice.requiredFuelsMembersImports).toStrictEqual([]);
+    expect(rawSlice.attributes.inputLabel).toEqual('RawSlice');
+    expect(rawSlice.attributes.outputLabel).toEqual('RawSlice');
+    expect(rawSlice.requiredFuelsMembersImports).toStrictEqual(['RawSlice']);
   });
 });
diff --git a/packages/abi-typegen/src/abi/types/RawUntypedSlice.ts b/packages/abi-typegen/src/abi/types/RawUntypedSlice.ts
index a3b2e666e35..3ec754c4e68 100644
--- a/packages/abi-typegen/src/abi/types/RawUntypedSlice.ts
+++ b/packages/abi-typegen/src/abi/types/RawUntypedSlice.ts
@@ -14,10 +14,15 @@ export class RawUntypedSlice extends ArrayType {
   }
 
   public parseComponentsAttributes(_params: { types: IType[] }) {
+    const capitalizedName = 'RawSlice';
+
     this.attributes = {
-      inputLabel: `RawUntypedSlice`,
-      outputLabel: `RawUntypedSlice`,
+      inputLabel: capitalizedName,
+      outputLabel: capitalizedName,
     };
+
+    this.requiredFuelsMembersImports = [capitalizedName];
+
     return this.attributes;
   }
 }
diff --git a/packages/abi-typegen/src/abi/types/StdStringType.test.ts b/packages/abi-typegen/src/abi/types/StdStringType.test.ts
index 2efd8164b87..8d87fc6974e 100644
--- a/packages/abi-typegen/src/abi/types/StdStringType.test.ts
+++ b/packages/abi-typegen/src/abi/types/StdStringType.test.ts
@@ -22,6 +22,6 @@ describe('StdStringType.ts', () => {
 
     expect(stdString.attributes.inputLabel).toEqual('StdString');
     expect(stdString.attributes.outputLabel).toEqual('StdString');
-    expect(stdString.requiredFuelsMembersImports).toStrictEqual([]);
+    expect(stdString.requiredFuelsMembersImports).toStrictEqual(['StdString']);
   });
 });
diff --git a/packages/abi-typegen/src/abi/types/StdStringType.ts b/packages/abi-typegen/src/abi/types/StdStringType.ts
index d7c0b103318..6272bc03fca 100644
--- a/packages/abi-typegen/src/abi/types/StdStringType.ts
+++ b/packages/abi-typegen/src/abi/types/StdStringType.ts
@@ -1,8 +1,8 @@
 import type { IType } from '../../types/interfaces/IType';
 
-import { ArrayType } from './ArrayType';
+import { AType } from './AType';
 
-export class StdStringType extends ArrayType {
+export class StdStringType extends AType implements IType {
   public static swayType = 'struct String';
 
   public name = 'stdString';
@@ -14,10 +14,15 @@ export class StdStringType extends ArrayType {
   }
 
   public parseComponentsAttributes(_params: { types: IType[] }) {
+    const capitalizedName = 'StdString';
+
     this.attributes = {
-      inputLabel: `StdString`,
-      outputLabel: `StdString`,
+      inputLabel: capitalizedName,
+      outputLabel: capitalizedName,
     };
+
+    this.requiredFuelsMembersImports = [capitalizedName];
+
     return this.attributes;
   }
 }
diff --git a/packages/abi-typegen/test/fixtures/templates/contract/dts.hbs b/packages/abi-typegen/test/fixtures/templates/contract/dts.hbs
index 7c4f05404db..b2ae11e14de 100644
--- a/packages/abi-typegen/test/fixtures/templates/contract/dts.hbs
+++ b/packages/abi-typegen/test/fixtures/templates/contract/dts.hbs
@@ -12,6 +12,7 @@
 import type {
   BigNumberish,
   BN,
+  Bytes,
   BytesLike,
   Contract,
   DecodedValue,
@@ -19,6 +20,8 @@ import type {
   FunctionFragment,
   Interface,
   InvokeFunction,
+  RawSlice,
+  StdString,
 } from 'fuels';
 
 import type { Option, Enum, Vec } from "./common";
@@ -71,7 +74,7 @@ interface MyContractAbiInterface extends Interface {
   encodeFunctionData(functionFragment: 'types_evm_address', values: [EvmAddress]): Uint8Array;
   encodeFunctionData(functionFragment: 'types_option', values: [Option<BigNumberish>]): Uint8Array;
   encodeFunctionData(functionFragment: 'types_option_geo', values: [Option<MyStructInput>]): Uint8Array;
-  encodeFunctionData(functionFragment: 'types_raw_slice', values: [RawUntypedSlice]): Uint8Array;
+  encodeFunctionData(functionFragment: 'types_raw_slice', values: [RawSlice]): Uint8Array;
   encodeFunctionData(functionFragment: 'types_std_string', values: [StdString]): Uint8Array;
   encodeFunctionData(functionFragment: 'types_str', values: [string]): Uint8Array;
   encodeFunctionData(functionFragment: 'types_struct', values: [MyStructInput]): Uint8Array;
@@ -121,7 +124,7 @@ export class MyContractAbi extends Contract {
     types_evm_address: InvokeFunction<[x: EvmAddress], EvmAddress>;
     types_option: InvokeFunction<[x: Option<BigNumberish>], Option<number>>;
     types_option_geo: InvokeFunction<[x: Option<MyStructInput>], Option<MyStructOutput>>;
-    types_raw_slice: InvokeFunction<[x: RawUntypedSlice], RawUntypedSlice>;
+    types_raw_slice: InvokeFunction<[x: RawSlice], RawSlice>;
     types_std_string: InvokeFunction<[x: StdString], StdString>;
     types_str: InvokeFunction<[x: string], string>;
     types_struct: InvokeFunction<[x: MyStructInput], MyStructOutput>;
diff --git a/packages/interfaces/src/index.ts b/packages/interfaces/src/index.ts
index 5112e973baf..a91be53076a 100644
--- a/packages/interfaces/src/index.ts
+++ b/packages/interfaces/src/index.ts
@@ -14,7 +14,9 @@ export type B256Address = string;
 
 export type B256AddressEvm = `0x000000000000000000000000${string}`;
 
-export type Bytes = Uint8Array;
+export type Bytes = Uint8Array | number[];
+
+export type RawSlice = Uint8Array | number[];
 
 /**
  * @prop value - A 256 bit hash string with the first 12 bytes cleared
@@ -23,6 +25,8 @@ export type EvmAddress = {
   value: B256AddressEvm;
 };
 
+export type StdString = string;
+
 /**
  * @hidden
  */