diff --git a/crates/sui-graphql-client/src/lib.rs b/crates/sui-graphql-client/src/lib.rs
index b1c3eb9..3c08a90 100644
--- a/crates/sui-graphql-client/src/lib.rs
+++ b/crates/sui-graphql-client/src/lib.rs
@@ -10,20 +10,20 @@ use base64ct::Encoding;
 use query_types::{
     BalanceArgs, BalanceQuery, ChainIdentifierQuery, CheckpointArgs, CheckpointId, CheckpointQuery,
     CoinMetadata, CoinMetadataArgs, CoinMetadataQuery, EpochSummaryArgs, EpochSummaryQuery,
-    EventFilter, EventsQuery, EventsQueryArgs, ObjectFilter, ObjectQuery, ObjectQueryArgs,
-    ObjectsQuery, ObjectsQueryArgs, PageInfo, ProtocolConfigQuery, ProtocolConfigs,
-    ProtocolVersionArgs, ServiceConfig, ServiceConfigQuery, TransactionBlockArgs,
-    TransactionBlockQuery, TransactionBlocksQuery, TransactionBlocksQueryArgs, TransactionsFilter,
-    Uint53,
+    EventFilter, EventsQuery, EventsQueryArgs, ExecuteTransactionArgs, ExecuteTransactionQuery,
+    ObjectFilter, ObjectQuery, ObjectQueryArgs, ObjectsQuery, ObjectsQueryArgs, PageInfo,
+    ProtocolConfigQuery, ProtocolConfigs, ProtocolVersionArgs, ServiceConfig, ServiceConfigQuery,
+    TransactionBlockArgs, TransactionBlockQuery, TransactionBlocksQuery,
+    TransactionBlocksQueryArgs, TransactionsFilter, Uint53,
 };
 use reqwest::Url;
 use sui_types::types::{
     framework::Coin, Address, CheckpointSequenceNumber, CheckpointSummary, Event, Object,
-    SignedTransaction,
+    SignedTransaction, Transaction, TransactionEffects, UserSignature,
 };
 
 use anyhow::{anyhow, ensure, Error, Result};
-use cynic::{serde, GraphQlResponse, Operation, QueryBuilder};
+use cynic::{serde, GraphQlResponse, MutationBuilder, Operation, QueryBuilder};
 use futures::Stream;
 use std::pin::Pin;
 
@@ -677,6 +677,38 @@ impl Client {
             Ok(None)
         }
     }
+
+    /// Execute a transaction.
+    pub async fn execute_tx(
+        &self,
+        signatures: Vec<UserSignature>,
+        tx: &Transaction,
+    ) -> Result<Option<TransactionEffects>, Error> {
+        let operation = ExecuteTransactionQuery::build(ExecuteTransactionArgs {
+            signatures: signatures.iter().map(|s| s.to_base64()).collect(),
+            tx_bytes: base64ct::Base64::encode_string(bcs::to_bytes(tx).unwrap().as_ref()),
+        });
+
+        let response = self.run_query(&operation).await?;
+
+        if let Some(errors) = response.errors {
+            return Err(Error::msg(format!("{:?}", errors)));
+        }
+
+        if let Some(data) = response.data {
+            let result = data.execute_transaction_block;
+            let bcs =
+                base64ct::Base64::decode_vec(result.effects.bcs.0.as_str()).map_err(|_| {
+                    Error::msg("Cannot decode bcs bytes from Base64 for transaction effects")
+                })?;
+            let effects: TransactionEffects = bcs::from_bytes(&bcs)
+                .map_err(|_| Error::msg("Cannot decode bcs bytes into TransactionEffects"))?;
+
+            Ok(Some(effects))
+        } else {
+            Ok(None)
+        }
+    }
 }
 
 #[cfg(test)]
diff --git a/crates/sui-graphql-client/src/query_types/execute_tx.rs b/crates/sui-graphql-client/src/query_types/execute_tx.rs
new file mode 100644
index 0000000..aa0f80b
--- /dev/null
+++ b/crates/sui-graphql-client/src/query_types/execute_tx.rs
@@ -0,0 +1,34 @@
+// Copyright (c) Mysten Labs, Inc.
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::query_types::{schema, Base64};
+
+#[derive(cynic::QueryFragment, Debug)]
+#[cynic(
+    schema = "rpc",
+    graphql_type = "Mutation",
+    variables = "ExecuteTransactionArgs"
+)]
+pub struct ExecuteTransactionQuery {
+    #[arguments(signatures: $signatures, txBytes: $tx_bytes)]
+    pub execute_transaction_block: ExecutionResult,
+}
+
+#[derive(cynic::QueryVariables, Debug)]
+pub struct ExecuteTransactionArgs {
+    pub signatures: Vec<String>,
+    pub tx_bytes: String,
+}
+
+#[derive(cynic::QueryFragment, Debug)]
+#[cynic(schema = "rpc", graphql_type = "ExecutionResult")]
+pub struct ExecutionResult {
+    pub errors: Option<Vec<String>>,
+    pub effects: TransactionBlockEffects,
+}
+
+#[derive(cynic::QueryFragment, Debug)]
+#[cynic(schema = "rpc", graphql_type = "TransactionBlockEffects")]
+pub struct TransactionBlockEffects {
+    pub bcs: Base64,
+}
diff --git a/crates/sui-graphql-client/src/query_types/mod.rs b/crates/sui-graphql-client/src/query_types/mod.rs
index 34accfd..0dbcb8a 100644
--- a/crates/sui-graphql-client/src/query_types/mod.rs
+++ b/crates/sui-graphql-client/src/query_types/mod.rs
@@ -8,6 +8,7 @@ mod checkpoint;
 mod coin;
 mod epoch;
 mod events;
+mod execute_tx;
 mod object;
 mod protocol_config;
 mod service_config;
@@ -20,6 +21,7 @@ pub use checkpoint::{CheckpointArgs, CheckpointId, CheckpointQuery};
 pub use coin::{CoinMetadata, CoinMetadataArgs, CoinMetadataQuery};
 pub use epoch::{Epoch, EpochSummaryArgs, EpochSummaryQuery};
 pub use events::{Event, EventConnection, EventFilter, EventsQuery, EventsQueryArgs};
+pub use execute_tx::{ExecuteTransactionArgs, ExecuteTransactionQuery, ExecutionResult};
 pub use object::{
     ObjectFilter, ObjectKey, ObjectQuery, ObjectQueryArgs, ObjectsQuery, ObjectsQueryArgs,
 };