diff --git a/lib/client/src/client.rs b/lib/client/src/client.rs
index b1eee5adb..0cf3fbc19 100644
--- a/lib/client/src/client.rs
+++ b/lib/client/src/client.rs
@@ -492,6 +492,64 @@ impl OpenBookClient {
         self.send_and_confirm_owner_tx(vec![ix]).await
     }
 
+    #[allow(clippy::too_many_arguments)]
+    pub async fn cancel_order(
+        &self,
+        market: Market,
+        market_address: Pubkey,
+        order_id: u128,
+    ) -> anyhow::Result<Signature> {
+        let ix = Instruction {
+            program_id: openbook_v2::id(),
+            accounts: {
+                anchor_lang::ToAccountMetas::to_account_metas(
+                    &openbook_v2::accounts::CancelOrder {
+                        open_orders_account: self.open_orders_account,
+                        signer: self.owner(),
+                        market: market_address,
+                        bids: market.bids,
+                        asks: market.asks,
+                    },
+                    None,
+                )
+            },
+            data: anchor_lang::InstructionData::data(&openbook_v2::instruction::CancelOrder {
+                order_id
+            }),
+        };
+        self.send_and_confirm_owner_tx(vec![ix]).await
+    }
+
+    #[allow(clippy::too_many_arguments)]
+    pub async fn cancel_all_orders(
+        &self,
+        market: Market,
+        market_address: Pubkey,
+        side_option: Option<Side>,
+        limit: u8,
+    ) -> anyhow::Result<Signature> {
+        let ix = Instruction {
+            program_id: openbook_v2::id(),
+            accounts: {
+                anchor_lang::ToAccountMetas::to_account_metas(
+                    &openbook_v2::accounts::CancelOrder {
+                        open_orders_account: self.open_orders_account,
+                        signer: self.owner(),
+                        market: market_address,
+                        bids: market.bids,
+                        asks: market.asks,
+                    },
+                    None,
+                )
+            },
+            data: anchor_lang::InstructionData::data(&openbook_v2::instruction::CancelAllOrders {
+                side_option,
+                limit
+            }),
+        };
+        self.send_and_confirm_owner_tx(vec![ix]).await
+    }
+
     #[allow(clippy::too_many_arguments)]
     pub async fn deposit(
         &self,