Yes, according to Luke

Luke calls both Paul and Barnabas in Acts 14:14 ...

Which when the apostles, Barnabas and Paul, heard of, they rent their clothes, and ran in among the people, crying out,

... as ἀπόστολοι 652. apostolos

NOTE: This verse is extremely suspicious due to the author being Luke, a companion of Paul, as confirmed by Ireneaus in his Against Heresies -- NOT Luke one of the original Twelve Disciples.

No, according to John

John was the last of the original Twelve apostles to die. He clearly did not include late-comers Paul nor Barnabas in Rev 21:14

The wall of the city had twelve foundations, and on them were the names of the twelve apostles of the Lamb.

... as ἀποστόλων 652. apostolos

Maybe, according to Calvin

In 1 Cor 4:9 we find Paul referring to Apollos

For it seems to me that God has put us apostles on display at the end of the procession, like those condemned to die in the arena. We have been made a spectacle to the whole universe, to angels as well as to human beings.

.. as ἀποστόλους 652. apostolos

The original twelve never refer to Paul, Barnabas, Apollos or Sylvanust as apostles. Reformed theologians and other apologists like to ignore the facts and invent their own interpretation -- in this regard John Calvin is no different. Now Calvin died before he could finish his commentary of Revelations 21 but we do have his commentary on 1 Cor 4:9 Where he writes:

It is uncertain if he is speaking about himself alone, or whether he includes Apollos and Sylvanus, for he sometimes calls men like them apostles. I prefer however to take it as referring to himself alone. If anyone wishes to give it a wider application, I have no great objection, provided that he does not understand it, like Chrysostom, to mean that all the apostles have been relegated to the least significant place, as if they were in disgrace.

References

• Text Analysis Acts 14:14
• Text Analysis Revelations 21:14
• Text Analysis 1 Corinthians 4:9
• John Calvin as Biblical Commentator: An Investigation into Calvin's Use of John Chrysostom as an Exegetical Tutor, Page 65

5. We now understand what offices in the government of the Church were temporary, and what offices were instituted to be of perpetual duration. But if we class evangelists with apostles, we shall have two like offices in a manner corresponding to each other. For the same resemblance which our teachers have to the ancient prophets pastors have to the apostles. The prophetical office was more excellent in respect of the special gift of revelation which accompanied it, but the office of teachers was almost of the same nature, and had altogether the same end. In like manner, the twelve, whom the Lord chose to publish the new preaching of the Gospel to the world (Luke 6:13), excelled others in rank and dignity. For although, from the nature of the case, and etymology of the word, all ecclesiastical officers may be properly called apostles, because they are all sent by the Lord and are his messengers, yet as it was of great importance that a sure attestation should be given to the mission of those who delivered a new and extraordinary message, it was right that the twelve (to the number of whom Paul was afterwards added) should be distinguished from others by a peculiar title. The same name, indeed, is given by Paul to Andronicus and Junia, who, he says, were “of note among the apostles” (Rom. 16:7); but when he would speak properly, he confines the term to that primary order. And this is the common use of Scripture. Still pastors (except that each has the government of a particular church assigned to him) have the same function as apostles. The nature of this function let us now see still more clearly. John Calvin, Institutes of the Christian Religion VI, IV.

According the John Calvin, the father of Reformed Theology, there are twelve apostles plus Paul who is included in their number. The confusion regarding Barnabas is the use of the term "apostle" in a sense different than it is applied to the Twelve and Paul. "Apostle" generally refers to an office in the church which closed upon the death of the final living apostle, but can also be used to describe missionaries and those who are sent by God. Similarly, the office of deacon is a specific church office, but the word "deacon" means servant and every Christian is a servant. Barnabas was a missionary sent by God, but not a member of the apostolic office.