Early church writers opposed to the baptism of infants? In his book On Baptism, Chapter 18, "Of the Persons to Whom, and the Time When, Baptism is to Be Administered," Tertullian says


  According to the circumstances and disposition, and even age, of each individual, the delay of baptism is preferable; principally, however, in the case of little children.


Based on the arguments he uses for this, and the way he says it, he is not making a case against paedobaptism the way that credobaptists would now. Nevertheless, he clearly is not in favor of the practice.

People obviously interpret different authors different ways. However, I am wondering: are there any other early church writers who are clearly opposed to paedobaptism? In other words, I'm not looking for writings that could be interpreted as credobaptist, I'm looking for writings where paedobaptism is clearly spoken against, as in Tertullian.
110-165 AD Martyr


  As many as are persuaded and believe that what we
  teach and say is true, and undertake to be able to live accordingly,
  are instructed to pray and to entreat God with fasting, for the
  remission of their sins that are past, we praying and fasting with
  them. Then they are brought by us where there is water, and are
  regenerated in the same manner in which we were ourselves regenerated.
  For, in the name of God, the Father and Lord of the universe, and of
  our Savior Jesus Christ, and of the Holy Spirit, they then receive the
  washing with water. For Christ also said, 'Except ye be born again, ye
  shall not enter into the kingdom of heaven.' Now, that it is
  impossible for those who have once been born to enter into their
  mothers' wombs, is manifest to all... And for this we have learned
  from the apostles this reason. Since at our birth we were born without
  our own knowledge or choice, by our parents coming together, and were
  brought up in bad habits and wicked training; in order that we may not
  remain the children of necessity and of ignorance, but may become the
  children of choice and knowledge, and may obtain in the water the
  remission of sins formerly committed, there is pronounced over him who
  chooses to be born again, and has repented of his sins, the name of
  God the Father and Lord of the universe.
  
  (Justin Martyr, "First Apology," Ante-Nicene Fathers, vol. 1, pg. 183)


115-188 THEOPHILUS


  On the fifth day the living creatures which proceed from the waters
  were produced, through which also is revealed the manifold wisdom of
  God in these things; for who could count their multitude and various
  kinds? Moreover, the things proceeding from the waters were blessed by
  God, that this also might be a sign of men's being destined to receive
  repentance and remission of sins, through the water and laver of
  regeneration, as many as come to the truth, and are born again, and
  receive blessing from God.
  
  (Theophilus, "To Autolycus,", Ante-Nicene Fathers, vol. 2, pg. 101)


140-230 AD TERTULLIAN


  But they roll back an objection from that apostle himself, in that he
  said, 'For Christ sent me not to baptize;' as if by this argument
  baptism were done away! For if so, why did he baptize Gaius, and
  Crispus, and the house of Stephanas? However, even if Christ had not
  sent him to baptize, yet He had given other apostles the precept to
  baptize. But these words were written to the Corinthians in regard of
  the circumstances of that particular time; seeing that schisms and
  dissensions were agitated among them, while one attributes everything
  to Paul, another to Apollos. For which reason the 'peacemaking'
  apostle, for fear he should seem to claim all gifts for himself, says
  that he had been sent 'not to baptize, but to preach.' For preaching
  is the prior thing, baptizing the posterior. Therefore the preaching
  came first: but I think baptizing withal was lawful to him to whom
  preaching was.
  
  (Tertullian, "On Baptism," Ante-Nicene Fathers, vol. 3, pg. 676)


181 AD Theophilus of Antioch


  Moreover, those things which were created from the waters were blessed
  by God, so that this might also be a sign that men would at a future
  time receive repentance and remission of sins through water and the
  bath of regeneration all who proceed to the truth and are born again
  and receive a blessing from God
  
  (To Autolycus 12:16).


There are probably a few more.